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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:
Easilyforgotten · 25/09/2026 17:11

I don't understand why he can't be the 'extra adult to help'? Then it will be the 2 of you there as her parents, and you can be firm about the no grandparents, girl friend and her kids on the grounds of capacity? Would he stick to that or ride roughshod on the day?

WallaceinAnderland · 25/09/2026 17:09

No, I wouldn't cancel it and also I wouldn't act like it was a big deal in front of DD. I would say, oh it's fine, the more the merrier. She will be happy with her friends and doesn't need to pay any attention to the GF children, or any other adults there. It's 2 hours, it's all been arranged, it will be fun.

The adults will just have to stand around bored or wait outside if there's not enough room for them but that's their problem.

seahorsessky · 25/09/2026 17:09

I'd say no to the girlfriend's kids, if he was the one who broke up your family with her-why should your kid be expected to spend time with her (obviously not blaming the kids). But his parents, well they're not going to be running round the hall so won't take up much room, and unless they encouraged their son to be a cheat, it's not their fault what's happened, and it's worth doing everything to preserve a relationship for their and your kid's sake-if he didn't care enough about you and your daughter not to cheat and leave a new girlfriend, you can hardly rely on him to try to keep the grandparent relationship going. It shouldn't be your job, but if he's a bad husband/dad, he is unlikely to be a decent son, so your daughter and her grandparents shouldn't suffer more because of him.

WallaceinAnderland · 25/09/2026 17:09

No, I wouldn't cancel it and also I wouldn't act like it was a big deal in front of DD. I would say, oh it's fine, the more the merrier. She will be happy with her friends and doesn't need to pay any attention to the GF children, or any other adults there. It's 2 hours, it's all been arranged, it will be fun.

The adults will just have to stand around bored or wait outside if there's not enough room for them but that's their problem.

DryadsRest · 25/09/2026 17:08

LivingDeadGirlUK · 25/09/2026 17:07

I think the PP who said he wants to make it a big family event at OPs expense has hit the nail on the head. He's got her after the party, taking her out for dinner, but he wants to bring a load of extra people to the party OP has organised now as well.

Agree he’s actually being incredibly rude - he just needed to say at the time he wanted to be there
op sounds really kind and accommodating
really rude to crash the party

alcovecupboards · 25/09/2026 17:08

You shouldn't have booked a party on his weekend. You're actually outrageous for that and if he had done it you would be getting very different responses. I don't see why you can't just avoid the drama and allow his parents to attend for your daughter?

LivingDeadGirlUK · 25/09/2026 17:07

I think the PP who said he wants to make it a big family event at OPs expense has hit the nail on the head. He's got her after the party, taking her out for dinner, but he wants to bring a load of extra people to the party OP has organised now as well.

DryadsRest · 25/09/2026 17:05

Yes but the mother checked beforehand that he was ok with her plans - he said he was fine, now hes waited to say hes changed his mind

Newyearawaits · 25/09/2026 17:01

timemotionboredom · 25/09/2026 16:58

I hate to state the obvious but...

This is a children's party. School children and a cousin school child. You and your mum are the entertainment and catering coordinators, that is all. Not guests. Is your ex going to pay towards anything there, serve up food, entertain the kids (eww), clean up afterwards. Is he going to look after his GF's kids?

Why the fuck should he, his gf and grandparents be there. It's fucking creepy.

So what if it's "his weekend". You haven't done it this way to fuck him over. It's his DD's birthday on that day. The hall is only available on that day. Can't he put his desire for control and his pathetic pettiness aside for his child...FOR ONE TWO HOUR PERIOD OF ONE BLOODY DAY. What a fucking wanker.

I'm going to unashamedly shout this because I suspect the answer is no...

ARE YOU INVITED TO HIS BIRTHDAY DINNER AND HE IS PAYING YOUR BILL?

I very deeply suspect not.

Tell him he can fuck off unless you, your parents and your DP are invited to his birthday dinner out.

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.

WeDid2 · 25/09/2026 16:59

honestly the extra adults are neither here or there they will be hanging out in a corner drinking tea

the other younger children is not great for the 10 year olds but the 10 year olds will likely just do their thing. If its anything I would put my foot down about the younger kids as they would change the dynamic and allow grandparents and girlfriend who will be bored

Newyearawaits · 25/09/2026 16:59

It could be that OP has subconsciously raised this as an issue and child has picked up on that.
I fairness to her dad, he very much wants to be involved and his parents also. That seems fair and reasonable to me.
OP, did you discuss the party and date etc with her dad?

Sartre · 25/09/2026 16:59

Your DD is old enough to talk to him about this herself which I’d recommend you facilitate. She needs to say that she just wants this party to be for her and her friends, not family. You’re only there to sort the food and make sure they’re all safe etc but you won’t be hanging out with them. If he’s a decent dad, he will listen to her.

timemotionboredom · 25/09/2026 16:58

I hate to state the obvious but...

This is a children's party. School children and a cousin school child. You and your mum are the entertainment and catering coordinators, that is all. Not guests. Is your ex going to pay towards anything there, serve up food, entertain the kids (eww), clean up afterwards. Is he going to look after his GF's kids?

Why the fuck should he, his gf and grandparents be there. It's fucking creepy.

So what if it's "his weekend". You haven't done it this way to fuck him over. It's his DD's birthday on that day. The hall is only available on that day. Can't he put his desire for control and his pathetic pettiness aside for his child...FOR ONE TWO HOUR PERIOD OF ONE BLOODY DAY. What a fucking wanker.

I'm going to unashamedly shout this because I suspect the answer is no...

ARE YOU INVITED TO HIS BIRTHDAY DINNER AND HE IS PAYING YOUR BILL?

I very deeply suspect not.

Tell him he can fuck off unless you, your parents and your DP are invited to his birthday dinner out.

cartagenagina · 25/09/2026 16:58

Ooh! I like the idea of security!

FactoryRecords · 25/09/2026 16:58

Your poor daughter, she’s told him she’s upset and he just doesn’t care! Can his parents be trusted to be sensible, keep quiet and help if they come? You shouldn’t have to but if they’ll keep quiet and muck in I’d consider asking your Mum to swap with his parents so they and he come to help with the cooking, tidy up etc. that’s only two additional people and you’ve ‘compromised’ but without going over numbers or allowing the younger children to come. It sounds to me like he wants to host a family gathering for her birthday with all the hassle and expense bourne by you.

tripleginandtonic · 25/09/2026 16:58

ChestnutSquash · 25/09/2026 15:41

You should have booked on your weekend and not told him. Can you cancel?

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

cartagenagina · 25/09/2026 16:57

I would cancel the party and take DD out all day instead. It’s what she’s asking for.

And in future you need to put this idiot on a strict information diet.

ACynicalDad · 25/09/2026 16:57

pay for security, cheaper than cancelling it all.

Floppyearedlab · 25/09/2026 16:56

You can’t cancel now but it was utter madness to book the party on his weekend. Never mind if that is her actual birthday.

Newyearawaits · 25/09/2026 16:55

DeftGoldHedgehog · 25/09/2026 16:22

Such bollocks. Grandparents never came to parties they had with their schoolmates any more than they do parties they go to now as adults. We had separate family birthday teas.

Edited

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

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.

OP posts:
itsalltoplayfor · 25/09/2026 16:52

Would it make any difference to him if your Mum wasn't there to help you but you roped in a friend or another parent of one of the girls instead? He can't then say it's not fair his Mum isn't there too. Just remove some of his leverage but go ahead with the party.

DryadsRest · 25/09/2026 16:51

If your daughter wanted a Family party that is different but she wanted one with her friends

Ezzee · 25/09/2026 16:51

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, I doubt the daughter gives a shit if her Dad is there or not, her friends will be there, Mum and Gran will be staff and birthday girl will be having fun.
The family can see her after her party, you get 1 day a year where as a child you can be utterly selfish and not in trouble for it.

DryadsRest · 25/09/2026 16:50

He is an idiot! He’s missing the point it’s her party so she has what she would like
if he wants to treat her with his gf etc he can do it another day

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