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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?

264 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:
fuckeditupbadly · Yesterday 08:41

FloridaCheese · Yesterday 08:13

TLDR but why didn't you book the party on your weekend. You have caused this merging of families at the party. When is the dad supposed to do his celebration. Yabu

whether it was agreed in advance or
not. More fool you for booking it on his weekend and giving him the opportunity to hang onto the coat tails.

Edited

Why would you bother to comment on a situation you don't have the facts about? She's explained repeatedly why it was booked on the birthday weekend and that he was fine about it.

Tinkalinkalink · Yesterday 08:34

Never book anything on his weekends. The end.

Namechangewegovyjune26 · Yesterday 08:29

BrightLemonHam · Yesterday 08:03

YABU. You absolutely cannot cancel it now. Don't teach your daughter to be flaky; it is important to honour our commitments.

It should never have been booked on his weekend. The whole “I already agreed” was a decision that he was railroaded into by you because you’d already decided before talking to him.

I don’t know any dad who ever facilitated a school friend birthday party, even the couples who are together. I’ve been to loads and often the dad wasn’t even there. Maybe if the mum wasn’t around who knows.

Why should the DD miss out because it’s on her dad’s weekend (rightly or wrongly) And he said it was ok anyway.

Topjoe19 · Yesterday 08:29

Can't understand why they'd want to go tbh! Shame they can't leave her to enjoy her party with her friends. I'm sorry OP, I hope the party goes ahead for her.

Namechangewegovyjune26 · Yesterday 08:26

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.

Hahahaha I don’t know any dads who have organised a school friend birthday party 😅

If that’s what her DD wanted on her actual birthday I don’t think the dad is facilitating that sadly - he would probably just organise his girlfriend, her kids, his friends and his parents and not care what the DD wants.

FairKoala · Yesterday 08:22

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!!

Then why has he invited the gf and her 2 kids.

If he so wants to have a party and invite who he wants then let him throw the party, organise entertainment, do food and drink and book a venue that has a larger capacity

Does he actually do anything like this or does he just want to take over

FloridaCheese · Yesterday 08:13

TLDR but why didn't you book the party on your weekend. You have caused this merging of families at the party. When is the dad supposed to do his celebration. Yabu

whether it was agreed in advance or
not. More fool you for booking it on his weekend and giving him the opportunity to hang onto the coat tails.

SomeOtherUser · Yesterday 08:09

If you would truly be over the limit with his suggested additional guests, tell him he will have to reduce his list by x number. Then let him bring whomever. Your daughter will still have a lovely time - surely she'll be preoccupied with her friends on the day.

TheOccupier · Yesterday 08:09

Are you able to speak directly to the GF and PILs and ask them very nicely to give the party a miss? Maybe offer to send DD afterwards with party bags for the GF's DC?

BrightLemonHam · Yesterday 08:03

YABU. You absolutely cannot cancel it now. Don't teach your daughter to be flaky; it is important to honour our commitments.

It should never have been booked on his weekend. The whole “I already agreed” was a decision that he was railroaded into by you because you’d already decided before talking to him.

Namechangewegovyjune26 · Yesterday 08:03

ProfMummBRaaarrrTheEverLeaking · 25/09/2026 18:43

He'll be thinking he can show off to his parents and girlfriend what a smashing dad he is (yeah just rocking up to a party he's not organised or paid for but happy to stand there and take some credit!)

He's likely already told the girlfriend it's all fine, so she's thinking woohoo free food and entertainment for my kids.

And that all matters more to him than how his daughter feels, and he'd rather dismiss how she feels. He says she'll be fine but what he really means is she'll just have get over it. On her birthday. What a knob.

So bloody true.

the poor DD doesn’t factor at all into his thinking.

Bluffinwithmymuffin · Yesterday 08:00

Moonnstarz · Yesterday 07:13

Not all relationships are this amicable and if does come down to a my turn/your turn situation.

Imagine if it had been mums weekend and dad said he was organising a party. I doubt she would have said yes to him doing it on her time.

If it’s not amicable between the OP and the dad, then all the more reason to tell him straight not to come; he can have his time with Dd afterwards, without spoiling the party.
We don’t know the OP or anyone involved though, so we can’t reasonably say (or doubt) what she would’ve done if the situation was reversed.

fuckeditupbadly · Yesterday 07:55

tripleginandtonic · 25/09/2026 16:58

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

Did you bother to read the OPs posts? She did exactly the opposite of that. He agreed to the party on that weekend and is seemingly happy for the op to be paying for it all.
OP, could he be the extra adult?

Namechangewegovyjune26 · Yesterday 07:51

Newyearawaits · 25/09/2026 16:55

Well that may have been for your family but not for all.
I have been to all my GC birthday parties.

Well quite. To me your example sounds unusual.

Grandparents have never been to my kids’ school friend parties since they were about 5. We usually do a separate thing for family.

Lovingapeacefulgarden · Yesterday 07:44

I would spell it out to him that DD does not want his girlfriend kids there because they are not her friends and they are far younger than her and her friends. I would also cancel your mum helping as that does look like its only your family allowed although I totally understand your reasoning. If he doesn't want to back down and still insists on ruining her party by making it a "family event" which she clearly doesnt want (natural at her age) then cancel it and take her and her friends somewhere on your day. Make sure she really wants it cancelled though and its not just a reaction. Its ridiculous his kids have been invited when she didn't invite them. I have 3 kids and when they have small parties with friends they dont invite their siblings and its not a family event either. Last year my middle child had a birthday party with his friends (similar age to your dd). We invited none of dhs family as we knew we would end up with an entourage if we invited MIL including another uninvited child because they were in the habit of tagging along when she was invited. Its fine to not invite kids that your child isnt friends with at that age.

wp65 · Yesterday 07:31

BlueMum16 · Yesterday 07:20

Ask him to be the second adult. Leave your mum at home.

You can't expect him not to be there. It's his DD birthday. It's his weekend.

Your DP is invited, he's only maybe not coming because of being on nights.

Your mum is there.

Can't you see you are being unfair.

Is there another hall/venue nearby you can swap to for something larger?

Alternatively is you house big enough to swap to there?

But OP has said he’s welcome! It’s all the extra people he wants to bring that are the problem.

StockingsByTheFire · Yesterday 07:24

OhJacintaWhatNow · 25/09/2026 15:42

Why did you book it on his weekend?

This!!

Some years her birthday will fall with you. This year she's supposed to be at her dad's.

You shouldn't have done that, because now they want to pile in and add extra people to a fairly fixed event, they can pull the "it's not even your weekend" card.

If they had already agreed to see her after the party, then why the change now to attend?

DrumsPleaseFab · Yesterday 07:22

Don’t cancel, and stop trying to control things on his day that he has her

you made a mistake by organising it on the day he has her

lesson learned

next year she can have two parties. one you organised on your day and one he organised on his day

the capacity issue is not an issue, what are they going to do? The village hall have not got council officers patrolling and counting

It is annoying that he is taking over, but you made the mistake to organise it in his day. And you must know he is unreasonable like this? Bad luck, make the most of it, grin and bear it, and lesson learned

BlueMum16 · Yesterday 07:20

Ask him to be the second adult. Leave your mum at home.

You can't expect him not to be there. It's his DD birthday. It's his weekend.

Your DP is invited, he's only maybe not coming because of being on nights.

Your mum is there.

Can't you see you are being unfair.

Is there another hall/venue nearby you can swap to for something larger?

Alternatively is you house big enough to swap to there?

Floofparty · Yesterday 07:15

Trying to picture this ‘hall’ that has a capacity of less than 20…

Moonnstarz · Yesterday 07:13

Bluffinwithmymuffin · Yesterday 07:04

So what if it’s the dad’s weekend? He’s not the child in this situation, and he still gets to see DD on her birthday, straight after her party - or during the party if he comes alone, which is a perfectly reasonable request.
I definitely wouldn’t cancel DD’s party. I’d have a word with the dad
and remind him it’s not about him or me, it’s about what our DD has chosen for her birthday

Not all relationships are this amicable and if does come down to a my turn/your turn situation.

Imagine if it had been mums weekend and dad said he was organising a party. I doubt she would have said yes to him doing it on her time.

givemesteel · Yesterday 07:12

I have the same situation with my ex. I'd rather blow a hole in my head then book this on his weekend and expect him to be reasonable.

You've caused this issue OP. Call the entertainer and the hall and see if they will rebook on a different date. I am sure they will even if they take some of the money to cover their loss on the day.

Yes it won't be her birthday but she'll get the party she actually wants.

Learn the lesson. Don't ever book stuff on his weekend again!

Foreverautumnagain · Yesterday 07:07

Saying the Hall manager won't mind the extra numbers is ridiculous. They will have a fire and safety licence which could be withdrawn if numbers are exceeded.
Tell him not to come until pick up time. He can watch the candles being blown out and then take her for his weekend.

In case you're interested I'm a GP to 6 and have never enjoyed their birthday parties. I'd rather have them on my own or just with their siblings not numerous other screaming, over excited 'little angels'! I usually hide in the kitchen clearing up, replenishing drinks etc.
In future explain to your DD the logistics to avoid confrontations and difficulties. Make different arrangements!
Hope it goes well and she enjoys it.

LoftyCoralBird · Yesterday 07:07

Yep it’s his weekend, so fine to invite his parents and partners kids.

Maybe you should have explained the choice to DD better? It’s either a birthday party on her birthday which will be on Dads weekend with Dads extras or a birthday party on your weekend, which will be smaller as not everyone can attend.

it’s very common to celebrate a birthday after or before the birthday day. Not sure why this is an issue. You could have just explained to DD that the party will be on a non birthday date and she will have a separate celebration with her dad on her actual birthday.

Bluffinwithmymuffin · Yesterday 07:04

sittingonabeach · 25/09/2026 16:06

But that poster said the dad shouldn’t be there. Understand not inviting all the extended relatives but a bit tricky saying dad shouldn’t be there for his DD’s birthday party on his weekend.

So what if it’s the dad’s weekend? He’s not the child in this situation, and he still gets to see DD on her birthday, straight after her party - or during the party if he comes alone, which is a perfectly reasonable request.
I definitely wouldn’t cancel DD’s party. I’d have a word with the dad
and remind him it’s not about him or me, it’s about what our DD has chosen for her birthday