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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:
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.

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?

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.

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.

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.

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?

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.

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.

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

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.

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 08:29

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.

Tinkalinkalink · Yesterday 08:34

Never book anything on his weekends. The end.

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.

BlueMum16 · Yesterday 08:42

wp65 · Yesterday 07:31

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

But the OP is being all the extra people too. Her mum is there, her partner is included if he wasn't on nights

The father just wants the same.

fuckeditupbadly · Yesterday 08:42

BlueMum16 · Yesterday 08:42

But the OP is being all the extra people too. Her mum is there, her partner is included if he wasn't on nights

The father just wants the same.

Her mum is helping g her run it. Maybe the dad could offer to do that?

Tinkalinkalink · Yesterday 08:44

And of course you have my sympathies he is being socially inappropriate, selfish if not down right controlling/ malicious. I have dealt with this shit for a decade. You only get piece of mind when you stop communication, sharing dates, doing anything for dc in 'his' time. All the best.

TheCabbageMerchant · Yesterday 08:44

Tinkalinkalink · Yesterday 08:34

Never book anything on his weekends. The end.

This. Whether he agreed or not. It just saves a lot of grief and heartache.

BlueMum16 · Yesterday 08:45

fuckeditupbadly · Yesterday 08:42

Her mum is helping g her run it. Maybe the dad could offer to do that?

Agreed the dad should be helping not the GP.

To all those saying he agreed, yes he did, but surely he assumed he would be included in a birthday party on his weekend on his daughter's actual birthday.

LogicVoid · Yesterday 08:52

I guess he is paying half towards the party costs..? No, didn't think so. He's piggy-backing on your time, energy, and £s. If he wants to be involved and share the experience as a parent, then he needs to have planned and participated properly, not agreed to the original arrangement and then hijacked at the last minute.

Namechangewegovyjune26 · Yesterday 08:56

BlueMum16 · Yesterday 08:42

But the OP is being all the extra people too. Her mum is there, her partner is included if he wasn't on nights

The father just wants the same.

No she said her mum is only coming because her partner can’t help. She just needs a pair of hands.

Nanaboots · Yesterday 08:57

Just tell him the hall isn’t big enough, show him the paperwork from the hall and the guest list there isn’t room and that’s that.

i would also point out that if his parents and girlfriend etc expect to attend the party you are doing for her, then you your partner and parents will be gatecrashing his party

Namechangewegovyjune26 · Yesterday 08:57

BlueMum16 · Yesterday 08:45

Agreed the dad should be helping not the GP.

To all those saying he agreed, yes he did, but surely he assumed he would be included in a birthday party on his weekend on his daughter's actual birthday.

He is? He has been invited to attend DD’s school friend party by himself and then take DD to celebrate with his extended family. If he can’t do that then he is a controlling arse.

Moonnstarz · Yesterday 09:00

Bluffinwithmymuffin · Yesterday 08:00

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.

But the point still stands it was his weekend, so if not amicable there was always the risk he would do something like this last minute.

For some people you need to stick to the rules in place, however annoying they might be. As I said the DD is turning 10 so it all could have been explained easily by mum to avoid this conflict - 'your birthday falls on dad's weekend, he might want to do something with you. We can do your party with friends on my weekend or one night after school, or you can ask your dad to arrange your party if you insist it must be on your birthday.'

LizandDerekGoals · Yesterday 09:05

SynthWaveX · 25/09/2026 16:55

I have tried telling him that DD is now saying she doesn’t want the party at all and it hasn’t really made a difference. He says she is upset because I’ve made it into an argument and that she’ll be fine once the day comes. Which I suppose is possible, but I don’t really want to take that chance.

I could maybe rearrange it but DD really wants it on her actual birthday and that was the date she chose. I also can’t afford to just book another hall and entertainer and lose what I’ve already paid, so I’m reluctant to do that unless I absolutely have to.

I hadn’t thought about getting someone else to help instead of my mum. She is only there because I need another adult for the practical stuff, not because I’ve invited her as a guest. But I can see why he might use that as an argument if she’s there and his parents aren’t. I might ask my mum if she’d be willing to stay away and get a friend to help instead, although I’m not sure that will actually make him happy tbh.

DP thinks I should just stop negotiating with him and have the party as planned
agreed.

and if he doesn’t want to come then that’s his choice
absofuckinglutely. He didnt arrange a party, did he!

My mum thinks cancelling would be unfair on DD because she shouldn’t lose her party
exactly.

just because her parents can’t agree
that isnt the reason. It is because her father wants his own way, despite his dd not wanting that and despite it being impractical.

I’m also annoyed because I’ve saved for this and already paid for everything, so cancelling it feels ridiculous
did you ask him for half? Im not suggesting you do as he would then expect control. But maybe next year you tell him he arranges the party (but also plan something and dont tell him)

I’m now thinking I should just tell him he isn’t invited if he is bringing everyone else
this. He picks her up at the arranged time. If he wants a party to include his family, he arranges one. If his parents have not seen her in a while, who does he think is to blame? That is on him and them.

keep the party exactly as planned and let him have DD afterwards

this and atop telling dd about his mantrum. It is upsetting her.

But then I worry she’ll feel like I deliberately excluded her dad from her birthday.
she does not want him and his new family there.