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How can I turn down uninvited siblings politely from nieces 9th birthday party?

367 replies

ThePetiteMermaid · 25/05/2026 13:29

I changed my user name for this and some details as it’s pretty outing (and a long post sorry - trying not to drip feed) but I need advice please.

My niece has a birthday party coming up this week and my Dsis was originally going to book a party package doing an activity with food and party bags included.
It worked out as far too expensive for her as a package because you need a minimum amount of guests to book and so she decided to take a smaller friend group and pay for them to do the activity individually and then to take them to a fast food place to eat.
She also decided instead of party bags to just do cake to save money and thought the kids might not expect one after an expensive activity and might be too old to be bothered anyway at 9 years old.

My Dsis became ill unexpectedly and had to have an operation which means she’s unable to host the party and her DH is at work so she asked me to do it.
I didn’t want my niece disappointed so have taken over the WhatsApp group to finalise things and I have a friend to help on the day.

I have had two messages from two mums basically saying siblings need to attend as it’s school holidays and not really asking but telling me. There hasn’t been any money offered but one mum put “Lucy isn’t expecting a party bag but I’m hoping you will be able to provide a meal for her”.

The other mums message was a bit more polite saying “Katy can’t come without her sister Jess as I have no one to look after Jess, I hope this isn’t an issue as Katy is really excited about coming to celebrate Amy’s birthday”.

I can’t believe how rude and cheeky this is, surely they aren’t expecting my Dsis to pay for the extra kids?
Even if the parents do offer to pay I don’t want to be responsible for two extra kids who will probably be a different age category anyway.

I want to reply saying that the party numbers are final and we can’t stretch to additional guests financially and also I don’t think two is enough people to safeguard extra children.
I wasn’t sure if I should include the financial part as they might have been expecting to pay for the siblings on arrival.

I was hoping for some help please in writing a response that is polite but firm, my Dsis said one of the mums will possibly try to drop the sibling off anyway as she has form for this.

I don’t have children so feel uncomfortable dealing with this and I was really surprised to hear it’s a common request, I can understand if it was a cheaper venue like a hall party when the kids were younger but not for an expensive activity!

I’m also wondering what to say to kids if they are expecting party bags. With one mum mentioning them in the text I’m thinking others might expect them and kids might ask for one. I don’t have the money or time to provide them and wouldn’t have a clue what to put in them, I don’t want to stress my Dsis when she’s ill and already fretting about pleaving me in charge, surely a slice of cake is enough?!

It would be helpful if someone could also give me a suggestion of what to say if someone does attempt to drop off a sibling please.

I’m ND and not the best with confrontation or awkward conversations and I’m really pissed off I’ve been put in this position and my niece will be really upset if the two girls can’t attend because we can’t include siblings although that maybe can’t be helped.
I wouldn’t have been as keen to volunteer to help if if known I’d be dealing with these cheeky requests and worrying about bloody party bags!

I’ve posted quickly but I have to go out now so I won’t be able to respond much until later.
I just thought I’d better add this in anticipation of people asking “where has the OP gone!”
I will update after I’ve hopefully handled the situation tactfully!

OP posts:
ZingyLemonMoose · 25/05/2026 19:52

‘As long as you’re ok paying for their activity and supervising them, that’d be fine. Guest numbers have already been finalised. Don’t worry about party bags, we’re just doing cake anyway. Look forward to seeing you then’

SpringingOn · 25/05/2026 20:00

Do they know your sister is ill and think that there is no-one to supervise their children? If so, maybe send one of the messages that say it is fine to leave the invited guests as there are two adults able to supervise the party guests - but obviously you can't pay for/supervise siblings too so if they want to stay and bring the younger children, they can pay for the activity and food separately.

Mumtobabyhavoc · 25/05/2026 20:00

Henhipster · 25/05/2026 19:36

We don’t know anything about the surrounding circumstances, unfair to criticise the brother in law, the auntie sounds great. Let’s be kind too.

I agree. OP said he is working, too. 🤷‍♀️

JJWT · 25/05/2026 20:00

Sausagesmyarse · 25/05/2026 13:35

“I am very sorry but we cannot accommodate siblings. The party venue and food has been booked for a certain number of children.

If you wish to bring older sibling, you can pay for their entry and food separately and you will need to stay to supervise them, they cannot be left with the party group.”

I’ve had the same so many times!!

Edited

This is perfect!

deeahgwitch · 25/05/2026 20:00

mondaytosunday · 25/05/2026 17:45

The kids are presumably 8/9. Say ‘numbers are set but you are welcome to drop and go’. Who stays at a 9 year olds party anyway?

I wouldn’t do that.
They’ll drop the invitee and uninvited sibling and run for the hills.
Leaving @ThePetiteMermaid to pay and supervise !!!!!

summermumma2021 · 25/05/2026 20:01

YANBU

I’ve had this a few times and I always say something like “Unfortunately we are restricted on numbers and the venue is booked for a seat number of guests. We hope that “inset name here” can still attend!”

As a mum of 3, I actually think it’s basic mum code to expect just the child named on the invite/the close friend of the child to be invited unless specifically specified otherwise. If I’m inviting a guest who has siblings I’ll always say just their name or to bring the whole family.

People can be so forward inviting their whole family 🥴

Strandas · 25/05/2026 20:01

floatinginacoolpool · 25/05/2026 13:45

I stayed either onsite or very close until mine were secondary age. Not remotely a helicopter parent but they have allergies requiring EpiPens and I didnt think it was fair to leave a party host solely responsible for them

Yes, that’s obviously a very specific scenario. But, you wouldn’t be asking about food being made for siblings in that case!

Mallard3 · 25/05/2026 20:04

I am one of those parents who have to drag along the other sibling as i have noone to care for them.
So its either both of them at the party or none.
BUT i have always paid for 2nd child if it was a public place ( entry and food)and ALWAYS offered to bring a separate packed lunch if it was a village hall thing.
I have never demanded a party bag or cake or anything like this.
Parents were alwaysnokay with this ( at least to my face)
When i have done birthday parties ( rarely) i would have always catered for extras ( village hall situation) and would have done a few extra party bags "just in case" but i have one child who is ND so it may be different?....in regards of ecpectations?

somanychristmaslights · 25/05/2026 20:05

icannotlivelaughloveintheseconditions · 25/05/2026 13:40

I would say something along the lines of “ Had a few questions about siblings - the play centre is open for everyone that day so if anyone wants to bring siblings and pay their entry fee/ meal at fast food place that’s fine . obviously parents bringing siblings will need to stay and supervise. Entry to event and meal at X place is covered for party kids.

Then when you arrive at event if you can pay up front for the invited kids and stand at entrance with list of names ticking them off as they arrive. Direct siblings /parents to desk to pay separately.

Yes this is a perfect response.

floatinginacoolpool · 25/05/2026 20:05

Strandas · 25/05/2026 20:01

Yes, that’s obviously a very specific scenario. But, you wouldn’t be asking about food being made for siblings in that case!

It's not particularly specific, I think around 1 in 10 children have allergies these days.
And I was responding to all the people claiming it is "weird" to stay if your child is 9.

MerryUmberHedgehog · 25/05/2026 20:05

OMG what a cheek. Sounds like they are trying to get some free child care. Say sorry but no. Forget question regarding party bags its not relevant. Good luck!

katepilar · 25/05/2026 20:07

Leopardspota · 25/05/2026 13:37

You can say ‘Amy’s party is for her small group of friends that we’ve booked for, but as it’s at an open event you’re welcome to book for Jess at the same time. There will be food (if there is!) and a slice of cake for the party bag. My DSis is unwell so I’m keeping it all as simple as possible! Looking forward to meeting you and Thanks for understanding, Mermaid

There isnt extra food and there are no party bags.

diddl · 25/05/2026 20:08

I am one of those parents who have to drag along the other sibling as i have noone to care for them.
So its either both of them at the party or none.

Even if the invited child could be left alone at the party?

Newusername0 · 25/05/2026 20:09

icannotlivelaughloveintheseconditions · 25/05/2026 13:40

I would say something along the lines of “ Had a few questions about siblings - the play centre is open for everyone that day so if anyone wants to bring siblings and pay their entry fee/ meal at fast food place that’s fine . obviously parents bringing siblings will need to stay and supervise. Entry to event and meal at X place is covered for party kids.

Then when you arrive at event if you can pay up front for the invited kids and stand at entrance with list of names ticking them off as they arrive. Direct siblings /parents to desk to pay separately.

This is 👌

AguNwaanyi · 25/05/2026 20:11

Wtf???

What did the mum have to say for herself when she picked the kids up? I would have blasted her in front of everybody.

Mumtobabyhavoc · 25/05/2026 20:12

Maybe we can all agree to message, Is it drop off and pick up?, to clarify when your dc receives a part invite.

latetothefisting · 25/05/2026 20:15

CanIjustAskPrettyPlease · 25/05/2026 13:39

I'd interpret that as there being food and cake for the uninvited child

same, and that there would also be a party bag (with stuff in it other than just a slice of cake, as otherwise I'd just say 'cake' and not mention a party bag).

the shorter the better so no room for interpretation. Possibly more along @Sausagesmyarse's suggestion rather than my initial 'No. Fuck off.'

tbh I'd take advantage of the fact that as auntie rather than mum you can be the bad guy, and be ruder or at least more abrupt than you would if you had to keep seeing them for the next few years. If they try anything I'd just insist 'Sorry, DSIS only gave me money for X,' then act completely bemused if they tried to suggest I pay for their extra child out of my own money.

Dublassie · 25/05/2026 20:15

Feis123 · 25/05/2026 14:01

I am sorry we are unable to accommodate siblings. Kind regards.

Absolutely just this !! No need for excuses or waffle.

PeloMom · 25/05/2026 20:16

Mallard3 · 25/05/2026 20:04

I am one of those parents who have to drag along the other sibling as i have noone to care for them.
So its either both of them at the party or none.
BUT i have always paid for 2nd child if it was a public place ( entry and food)and ALWAYS offered to bring a separate packed lunch if it was a village hall thing.
I have never demanded a party bag or cake or anything like this.
Parents were alwaysnokay with this ( at least to my face)
When i have done birthday parties ( rarely) i would have always catered for extras ( village hall situation) and would have done a few extra party bags "just in case" but i have one child who is ND so it may be different?....in regards of ecpectations?

Surely at this age you drop off the 8/9yr old kid and leave to do whatever with the sibling?

katepilar · 25/05/2026 20:18

Viviennemary · 25/05/2026 13:41

Either postpone the whole thing for a week or two of just reply politely that sorry you haven't room in your house for extra children and you've already had to turn down similar requests. What is wrong with people. Too annoying.

Why would you talk about "your house" when the party is held at a different place?

INX · 25/05/2026 20:24

Henhipster · 25/05/2026 19:36

We don’t know anything about the surrounding circumstances, unfair to criticise the brother in law, the auntie sounds great. Let’s be kind too.

“Let’s be kind too.” 🤮

It’s not ‘unkind’ to point out this man should be doing more for his wife and daughter.

tiptoethrutulips · 25/05/2026 20:49

lazyarse123 · 25/05/2026 13:44

Why do people always say they're struggling for childcare? What would they do with the kids if there was no party, especially as it's drop and go at this age?

This

They're not ... they just want someone else to entertain ALL their children and/or not disappoint them by letting only the invited one to the 'exciting' birthday party.
Absolute pisstakers.

DeeperShadeOfBlu · 25/05/2026 21:26

My reply wouldn’t be as polite as most of the suggestions!

GingerBeverage · 25/05/2026 21:27

Realised yesterday (at a kids party) that there was a boy there who has never been to a party without his little sister in tow. Both parents take turns but the sister gets ‘upset’ if she doesn’t join. Made me feel quite sorry for him.

User3234352 · 25/05/2026 21:29

WTAFIsWrongWithPeople · 25/05/2026 19:31

We, and now my sister, had a small basket of fidget toys or colouring pencils and a load of age appropriate books that kids could choose from, and then a piece of cake. You can get packs of 10 books for £10 from The Works or Costco so it doesn’t have to be expensive, nor does it have to be a bag if plastic tat. Several other parents have done the same after coming to one of our kids’ parties.

That's totally fair, no judgement at all if parents choose eco-friendly party favours. There's still a gesture of gratitude given, which is essentially what a party bag is. It's a token gift to thank someone for taking the time to come and make the social gathering fun with their presence.

What's totally fake are miserable old cows who claim they hate party bags because they never enjoyed getting them as children and it's full of cheap plastic tat that's bad for the environment, and use that as a justification for not giving anything as a thank you gift to the guests. It's the un-generous nature of it all.

How sad must someone's existence be that they can't understand that some children might genuinely be happy about an unexpected gift or enjoy the whimsy behind planning a lovely thank you gift for people coming together to help your child have a great birthday?

There was actually a MN thread a while ago where a mum gleefully admitted to throwing everything in her daughter's party bag into the bin during the drive home.