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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

To cancel DD’s birthday party because I know her dad will ruin it?

263 replies

SynthWaveX · 25/09/2026 15:35

DD is turning 10 next Saturday and I’ve booked a little party for her which she has been excited about for weeks. There will be about 10 girls from her class and her cousin, so 11 children altogether. It’s only a 2 hour party at the local community hall, with a cheap entertainer, pizza and cake. DD picked the theme and has been very clear she wants it small and just her friends, no adults making a fuss.

The problem is it falls on her dads weekend. We’ve been separated about 4 years and he normally has the DC alternate weekends. I had already agreed I’d do the party and he could have DD afterwards and take her out for dinner, presents etc. I genuinely thought that was a reasonable arrangement. He does see her regularly and I’m not trying to stop him being part of her birthday, I just thought the actual party could be the thing I had organised.

A few days ago he asked if his parents could come. I said the hall is quite small and it’s a drop off party, so I didn’t think extra adults would work. Then he said his GF and her 2 children would be coming too. Her children are about 7 and 4. DD apparently got upset when he told her and later said to me she didn’t want them there because “it’s my party and I don’t know what I’m meant to do with them”. She just wants it to be her friends and cousin, which is what we had planned.

There have been a few similar things before. He does have a habit of making things into quite big family occasions. Last Christmas he brought extra relatives along to something I’d arranged without checking first, and at DS’s school event he turned up with several people which was a bit chaotic. I’m not saying he doesn’t love the children because he does, and DD loves seeing her grandparents too. I know they enjoy having her and I’m not trying to keep them away. It’s just that sometimes he seems to think every event has to include everyone.

He said his parents haven’t seen DD for a little while and were looking forward to her birthday, and that I was making him look bad in front of his family. I said they can see her, and that he can have her straight after the party and take her for dinner and cake and give her presents etc. He then said he is her dad and shouldn’t have to “book an appointment” to attend his own daughters birthday. I did get annoyed at that because I’m not stopping him seeing her, I’m saying he can’t just add 4 extra people to something that was planned as a small party.

The hall has a proper maximum capacity and I’ve already paid for it, the entertainer, food and the cake. It isn’t just me being fussy about having extra people there. If all the children come plus me and the adults he wants to bring it would be over the number we’re allowed. He says some of the children won’t take up seats anyway and I’m being ridiculous about it. I’ve told him he can come on his own if he wants to, but he says that’s not the point because his family should be there too.

DD has now started saying she doesn’t even want the party. She said she’d rather I cancel it and take her shopping and for lunch with me. I honestly feel sick about it because she was so excited before all this started. I know she is only 10 and obviously doesn’t understand all the adult stuff, but I hate that she is now upset about something that was meant to be for her. It feels like whatever I do I’m going to make it worse, and maybe I already have by arguing with her dad about it.

DP thinks I should just stop negotiating with him and have the party as planned, and if he doesn’t want to come then that’s his choice. My mum thinks cancelling would be unfair on DD because she shouldn’t lose her party just because her parents can’t agree. I haven’t told the other parents anything yet because I don’t want to start making a drama out of it when it might still be sorted. I’m also annoyed because I’ve saved for this and already paid for everything, so cancelling it feels ridiculous, but obviously that’s not more important than DD being happy.

I’m now thinking I should just tell him he isn’t invited if he is bringing everyone else, keep the party exactly as planned and let him have DD afterwards. But then I worry she’ll feel like I deliberately excluded her dad from her birthday. The other option is cancelling it all and doing something with her instead, which she is now saying she wants anyway. I know how this sounds and I might be completely unreasonable here, but am I actually the one who’s ruining her birthday now? AIBU to just say no to all the extra people and carry on with the party?

OP posts:
Fortuity · 25/09/2026 17:26

tripleginandtonic · 25/09/2026 16:58

This. You booked it on his weekend without his agreement, I can see why he wants to attend.

But he did agree. Where does that come from?

Purplebunnie · 25/09/2026 17:33

His parents and him are the only people who could possibly attend (sorry that reads badly, sorry for the iffy grammar). His GF and HER two children can make themselves scarce. This should be the conditions you are discussing.

His mom can also help your mom with the cake

No way should his GF and her two children be attending. It's non-negotiable his GF and her two children do not attend

Nofeckingway · 25/09/2026 17:33

Doesn't he understand that it's not a family party , it's a school party 🎉. And for 10 years olds only . He can have his own family party too for her with grandparents and his current girlfriend's gang .
Why do these men create difficultly for no reason . Must be so annoying. How many more years do you have to put up with this pain in the arse.

DryadsRest · 25/09/2026 17:35

Nofeckingway · 25/09/2026 17:33

Doesn't he understand that it's not a family party , it's a school party 🎉. And for 10 years olds only . He can have his own family party too for her with grandparents and his current girlfriend's gang .
Why do these men create difficultly for no reason . Must be so annoying. How many more years do you have to put up with this pain in the arse.

Probably not that much longer because if he carries on his daughter won’t want to see him on his weekends anyway!

MyLimeGuide · 25/09/2026 17:36

What a selfish man. I hate men that want to force their new partners kids on their original children's events.

notwhingingjuststatingfacts · 25/09/2026 17:44

tripleginandtonic · 25/09/2026 16:58

This. You booked it on his weekend without his agreement, I can see why he wants to attend.

Try again @tripleginandtonicthis time read what the OP has written! She DID have his agreement before booking it! He changed his mind afterwards!

HappySummerFun · 25/09/2026 17:45

Shame it's not a boys' trampolining party. If it was, I'd say come along if you must but don't come crying to me when the younger kids are annihilated.

BobLemon · 25/09/2026 17:57

If you need help, ask him to help instead of a random friend.

As others have said, you shouldn’t have organised it on his weekend. Your DD wants a party on her Dad’s weekend? Great, her dad can organise it.

and as others have said - don’t make a big deal of it. Whatever happens on the day happens. It’s exposing her to the tussle pre the event that is likely more unpleasant than whatever will occur.

Bridgertonisbest · 25/09/2026 17:58

Ffs, you’ve booked and paid for the party so you can have who you want he can invite his parents, his girlfriend and her children to a party he’s paid for.

Can the girl not have a party with her friends and not dads girlfriends kids??

kittensinthekitchen · 25/09/2026 18:03

Unless you've booked a party in an elevator, the hall being "too small" is bollocks.

Canitrustagain · 25/09/2026 18:05

Wannabemornighmum · 25/09/2026 15:47

Ps his parents are her GPs too and he’s her dad, he has every right to want to be part of a birthday, roles reversed and people would be going nuts!!

She’s 10 and it’s her party - she wants her mum, her friends, and her cousin. She doesn’t want step siblings and her grandparents. My grandparents were never at my birthday parties. My friends never had grandparents at theirs! Her dad can arrange something the next day instead of making his daughter’s party all about him.

WyrdHag · 25/09/2026 18:09

What an absolute bell-end your ex is.

Can you email the people you're hiring from and ask them to confirm the number limit for fire regs - then send it to him and say 'look, legally you can't come' we will need to go ahead as planned?

I'm sorry there's no easier way to fix this, I had similar aggro with my Ex turning up with uninvited family guests to DDs 21st birthday last year - difference was they just gatecrashed with no warning!

Bellyblueboy · 25/09/2026 18:10

Would a compromise work - grandparents there, and just both parents. No girlfriends/boyfriends and no extra children?

That’s five adults - you can’t accommodate any more and his girlfriends children are too young for the party: they can see the birthday girl afterwards

LlynTegid · 25/09/2026 18:14

Hall maximum capacity is for a reason.

Say no and have a separate celebration.

AmazonAntiqueStore · 25/09/2026 18:19

Newyearawaits · 25/09/2026 17:01

Missing the point entirely. It's his daughter's birthday party and all the people I know have had both parents at a birthday party, very much the norm.

Parents, maybe, but not grandparents and the rest of the hangers-on he wants to bring.

if it was just the father wanting to come then I doubt OP would have started this thread.

dingbat5 · 25/09/2026 18:21

It must be a very tiny hall if the capacity is less than, what 20 people? In any case I can see why it would cause ructions to have your mum there but tell the other grandparents they’re not welcome. The GF and her dc I get, because they are younger and your dd should have the friends she wants there not hangers on of her dads family.

Its really unfair when the wants of adults put kids in a position like this. I wouldn’t cancel but I would compromise as much as possible just to keep the peace for your daughter. If he really won’t budge then just tell him not to bother coming at all.

BreatheAndFocus · 25/09/2026 18:24

SynthWaveX · 25/09/2026 16:44

I think I probably should have made that clearer in the OP, but DD specifically wanted it on her actual birthday. She has been talking about having her friends there on the day for ages and that was the date she picked. The hall also only had that date available, so I didn’t really have another option.

Her dad did know it was on his weekend and agreed to her having the party then, with him having her afterwards. So I wasn’t trying to take his weekend away from him or arrange it without him knowing. We’ve swapped weekends around before for birthdays.

I do understand the point about him wanting to be there and I’m not saying he shouldn’t. I’m struggling more with the number of extra people because it was booked as a small party and the hall really does have a capacity limit. I might be being too rigid about it though, hence asking.

Have you not got an arrangement where you alternate birthdays and Christmas? That is, one year she’s with you on her actual birthday, the next year with him? That helps stop the uncertainty and arguments, and means everyone knows what’s what.

With this arrangement, if it was his year to have her for her actual birthday, then that would be fine as it was his weekend anyway. If it had been his year and her actual birthday was on a day she was with you, you just swap that one day.

It’s also easier for your DD as she’d know not to ask you to organise a birthday on his day, and you could decide a different day for the party with her.

The only way he’s being unreasonable is by agreeing to it but not mentioning he wanted to come and bring others.

deadbobaplace · 25/09/2026 18:24

You need to make it very clear that if GF and kids turn up they will not be allowed in for health and safety reasons. Not up to you, it's the venue etc.

Though if it's going to ruin DD's birthday worrying about dad's entourage crashing the party, I would maybe go along with her plans to cancel, do something lovely with her and reschedule the party for another time. And absolutely ask him to reimburse me the money I'd lost through him being a dick.

DuckbilledSplatterPuff · 25/09/2026 18:25

Fortuity · 25/09/2026 17:25

I’m now thinking I should just tell him he isn’t invited if he is bringing everyone else, keep the party exactly as planned and let him have DD afterwards. But then I worry she’ll feel like I deliberately excluded her dad from her birthday.

Why would that bother her, given that she knows it's her dad who is trying to mess it all up?

Your ex is awful. He wants his own way and doesn't care what his DD wants. And the absolute cheek to blame it on you.

Turn round and message him.

You have back tracked on our agreement.
Organise and pay for your own party and then you can invite who you like."
I will drop DD to you now.

So what if he complains. Let him.

Don't start worrying in advance what DD will or won't think. The poor girl already wants to cancel. Tell her you think it would work best if she sees her dad and everyone else after she's had her party with school friends. And that' is it. She will be relieved you have made the decision for her.

You sound like such a kind mum... but now you've got to be a tiger and stand up for yourself and your DD.. Stop anticipating what your bully ex and his fam think.. Decide what you want and stick to it. Exactly like he does...
Practice trotting out "No that is not possible. " No I am not doing that." "No that is not what we arranged and I am not changing plans at this stage." "No we will stick to the plan".

You are too nice and because you've been kind and co operative, he takes advantage and thinks you are pliable and will bend if enough force is exerted. Stick to your guns.. All the words are sticks and stones.

And don't let him use that lame excuse of you are upsetting DD. He literally knows that's the trigger to pull when he wants you to cave. He's the one doing that. ..and it's just pure emotional blackmail. How the hell are you ever setting out to upset your DD, sounds like you are doing everything you can to help her. Have some stock phrases ready to squash this. The idea is don't argue. State what is going to happen. and then stick to it

Seriously... what's he going to do?

BertieBotts · 25/09/2026 18:25

IMO the priority would be avoiding the stepsiblings unless DD is really keen to avoid dad being there altogether, because adding extra children will change the mix of the party, but I would not cancel the party, it seems like a shame. If the compromise for it not being cancelled means that your ex and his parents come, I think that is less of an issue unless DD is adamant she doesn't want him there

Ideally it would be best to be clear if you don't want to do shared parties (that is a perfectly reasonable line to hold, BTW). If you draw the line before the party, it will probably be easier to hold it for future parties otherwise you'll forever be battling off "Oh but the GP came to the last one".

OTOH if it's too close and he is the type to dig his heels in and try harder to cause a big scene, it might be better to try to mitigate damage by saying no to the younger DC but not objecting to the adult guests, and then next year just book it on your time and don't mention it until afterwards.

Can you tell a white lie and say you've checked with the venue and unfortunately the minimum age is 8 to put him off?

Other than this I would lean heavily on the capacity thing and say look - really sorry but the party is booked for X amount and they won't accept extras, so we can't accommodate the girls. You can celebrate DD's birthday with them on another day, did you want to swap the following weekend?

Whatever you decide, don't get involved in loads of back and forth and justifying, just set out the terms and leave it there. Use some kind of broken record statement like "No, that won't work."

BertieBotts · 25/09/2026 18:27

DuckbilledSplatterPuff · 25/09/2026 18:25

Your ex is awful. He wants his own way and doesn't care what his DD wants. And the absolute cheek to blame it on you.

Turn round and message him.

You have back tracked on our agreement.
Organise and pay for your own party and then you can invite who you like."
I will drop DD to you now.

So what if he complains. Let him.

Don't start worrying in advance what DD will or won't think. The poor girl already wants to cancel. Tell her you think it would work best if she sees her dad and everyone else after she's had her party with school friends. And that' is it. She will be relieved you have made the decision for her.

You sound like such a kind mum... but now you've got to be a tiger and stand up for yourself and your DD.. Stop anticipating what your bully ex and his fam think.. Decide what you want and stick to it. Exactly like he does...
Practice trotting out "No that is not possible. " No I am not doing that." "No that is not what we arranged and I am not changing plans at this stage." "No we will stick to the plan".

You are too nice and because you've been kind and co operative, he takes advantage and thinks you are pliable and will bend if enough force is exerted. Stick to your guns.. All the words are sticks and stones.

And don't let him use that lame excuse of you are upsetting DD. He literally knows that's the trigger to pull when he wants you to cave. He's the one doing that. ..and it's just pure emotional blackmail. How the hell are you ever setting out to upset your DD, sounds like you are doing everything you can to help her. Have some stock phrases ready to squash this. The idea is don't argue. State what is going to happen. and then stick to it

Seriously... what's he going to do?

Edited

Someone give this poster a gold medal. This is absolutely spot on. OP frame it and put it next to your bathroom mirror.

Snowyowl99 · 25/09/2026 18:36

You sound as if you think DD is more your child than his. Why did you book it on his weekend? You should have booked it on your own time with her. It's his time and I think you are being very unfair ...at the very least you should be welcoming him , his gf, grandparents since you have overstepped and very arrogantly decided to arrange a party in his time.

MusicalRocks · 25/09/2026 18:36

I've had similar issues to this. Id tell him his parents are welcome if they want to come and help but that you are at capacity for children so your gf and her kids should meet him and DD for their family celebration after the party. If he tries to argue just tell him you have been told very clearly that the party is already at capacity and they are not invited, they were never invited. They can all do their own thing after the party. The only way to deal with this is to be the bad guy to take flack off your daughter and stick very clearly to the boundaries you have already set. He made this issue by randomly inviting others to a party that he hadn't planned or paid for.

canklesmctacotits · 25/09/2026 18:39

I think you messed up by organizing a party for her without including her other parent. Had you had a conversation with him first, this would all have been aired before then.

Anyway at this point you need to dial it right down for her. She's only 10. Party should go ahead, children should come, ex should come as should partner and her children and his parents. The table will be set up for 11, adults will just skulk around the edges and maybe help hand stuff around and slice cake. It's a kids' birthday party, it'll be fine. Your focus is on your daughter, not this side drama. Both parents and as many grandparents as possible should be there to sing happy birthday, smile as she blows out her candles, remind her to say thank you for her gifts.

If the 4 and 7 yo tip the numbers over the maximum allowed, you'll have to tell your DP this. They and their mum will have to stay away - and sorry, but I think any accusation that you've excluded them is kinda your fault because you excluded the actual dad.

This should all have been flushed out before hand, and because it wasn't you're here. You'll know for next year. You're not her only parent.

DryadsRest · 25/09/2026 18:40

canklesmctacotits · 25/09/2026 18:39

I think you messed up by organizing a party for her without including her other parent. Had you had a conversation with him first, this would all have been aired before then.

Anyway at this point you need to dial it right down for her. She's only 10. Party should go ahead, children should come, ex should come as should partner and her children and his parents. The table will be set up for 11, adults will just skulk around the edges and maybe help hand stuff around and slice cake. It's a kids' birthday party, it'll be fine. Your focus is on your daughter, not this side drama. Both parents and as many grandparents as possible should be there to sing happy birthday, smile as she blows out her candles, remind her to say thank you for her gifts.

If the 4 and 7 yo tip the numbers over the maximum allowed, you'll have to tell your DP this. They and their mum will have to stay away - and sorry, but I think any accusation that you've excluded them is kinda your fault because you excluded the actual dad.

This should all have been flushed out before hand, and because it wasn't you're here. You'll know for next year. You're not her only parent.

She did check with him beforehand