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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:
AguNwaanyi · Yesterday 12:46

Mangochutney33 · Yesterday 06:23

I totally 100% would. I have zero time for CFs and would not be lumbered with their kids. If the taxi wouldn't take them I'd dump them on the venue staff to deal with. Not my problem. The CFs will keep getting away with it if everyone lets them, that's why it's such a problem in the first place with everyone going "awww it's just a child of course I'll suck it up and let the responsibility be dumped on me and pay for them". I'd be nice to the kid but they wouldn't be joining the party and I wouldn't be taking responsibility for them, I'd explain their parent made a mistake leaving them at the party and should have taken them home with them. It sucks for the kid but that's not my problem, it's the parent who abandoned them that caused their upset.

There's always that one who takes it too far. Some of you are actual safeguarding risks for children. If you would put the child at risk you wouldn't be "nice".

If you want to be big and bad, better to tell the parents that they either pick up their kid or you will call social services, and mean it.

SnappyQuoter · Yesterday 12:49

AguNwaanyi · Yesterday 12:46

There's always that one who takes it too far. Some of you are actual safeguarding risks for children. If you would put the child at risk you wouldn't be "nice".

If you want to be big and bad, better to tell the parents that they either pick up their kid or you will call social services, and mean it.

A child being left at the reception is not at risk. The parents will have to come back to
collect. I know a lot of people who simply wouldn’t have the money to pay another £10/15 to get that child in so including them in the party would simply not be possible. And cancelling your kids party at that moment is absolutely out of the question. So, the uninvited kid would be left at reception. The child would be a stranger to you, uninvited and nothing to do with you. The reception staff can leave them on a chair until a parent turns up. It’s not the responsibility of the host parent.

Shinyandnew1 · Yesterday 12:53

Good text, @ThePetiteMermaiddid you get any replies?!

Runnermumof2 · Yesterday 12:55

That's terrible! I would never ask someone to take a sibling. I've hosted parties before and have had parents ask if siblings can come, or I've messaged and said to those with siblings whether they can or can't come. I did one where it was a set number activity and had a couple of parents bring siblings but only to watch not to take part. I actually had spare slots as there were people who had to cancel last minute and they were super appreciative when I offered for their sibling to take part in the activity and they definitely didn't expect it. I also brought spare party bags and they tried to refuse when I offered to the siblings, but I pretty much forced them to take it lol ! You are very generous to be even on helping at all. I would have cancelled the party /rescheduled it.

AguNwaanyi · Yesterday 13:00

SnappyQuoter · Yesterday 12:49

A child being left at the reception is not at risk. The parents will have to come back to
collect. I know a lot of people who simply wouldn’t have the money to pay another £10/15 to get that child in so including them in the party would simply not be possible. And cancelling your kids party at that moment is absolutely out of the question. So, the uninvited kid would be left at reception. The child would be a stranger to you, uninvited and nothing to do with you. The reception staff can leave them on a chair until a parent turns up. It’s not the responsibility of the host parent.

Did you not read the part about dumping the child in a taxi unsupervised???
And if you read my replies EYE am absolutely not letting a parent get away with this. By my solutions don't include any safeguarding risks.

For me, better to be direct and rude upfront. My suggested message for OP was to warn the parents that she knows some of them will try it and that if they do their kids will not be joining in so they better come correct.

MachineBee · Yesterday 13:39

AguNwaanyi · Yesterday 00:42

Sounds like Katy's mum was hoping with an ultimatum you would cave in to accepting both kids.

Also sounds like Lucy's mum is used to getting away with this so you need to have a plan in place. Target these two mums specifically to greet at drop off and if you see another child in tow stay with them until you see them leave with them. Either you do this or your friend or this useless BIL of yours. If these mums are planning on trying their luck they are relying you on you being distracted. They may even instruct their kids to get out of the car and drive off so try and be by the drop off point.

I also don't think it's wrong to send a message to the group chat to make it clear that anyone who doesn't adhere to the rule will be embarrassed. Something along the lines of:

"We have had a few questions about bringing siblings and I want to make it clear that unfortunately this is not possible as the party format and budget doesn't allow for additional guests other than the children Amy invited. I'm sure everyone will respect this but I do need to reiterate that under no circumstances will additional guests be included in the activity and food, even if they are dropped off at the party. I don't believe any of us want any child to experience this so I'm sure with this information everyone will kindly adhere to the guidelines. We are very grateful to have you bringing Amy's friends to celebrate her birthday with her."

This is spot on

PurpleThistle7 · Yesterday 13:45

80smonster · Yesterday 11:52

I think you can say no to siblings, though if one of these children is a best friend, usually you would accommodate (just because there have been many play dates, sleepovers etc). I would do party bags, just a slice of cake and x 1 gift will do.

I would never accommodate my child not being able to do what they wanted at their own birthday party. The OP has explained that the areas are split up by age so if they have a younger sibling in town, that means they can’t use that space. Thats super unfair.

I did accommodate a sibling once actually. My son’s bestie’s dad died a few weeks before the party and he asked to bring his older brother along. I had my daughter and another similar aged sibling come too so it wasn’t too obvious and it didn’t change anything about the party as it was older siblings. I haven’t had a parent stay at a house party since they were 5 so there’s no excuse really

tiptoethrutulips · Yesterday 13:57

I'd tuck some colouring materials and a couple of books into a bag and have them ready if Lucy's mum tries it on and drops off the sibling ... she can sit in reception doing it while you text her mum that that's where she is and she needs to come get her.

Coffecakeicing · Yesterday 14:10

Great message OP.

Party bags are absolutely not necessary IMO.
Years ago I would stock up on Natural Jellies when on special offer, and would give children a bag of these at the end of our parties.
They did the job just fine, but I reallydon't think one is necessary especially after such a generous outing.

ThePetiteMermaid · Yesterday 14:23

user1492757084 · Yesterday 07:43

Make an extra cake which can already be cut and wrapped. Ask the extra two kids to pay $$ for their entry and meal. You might have a kid or two not turn up anyway.

Ask another adult to assist you.

I'd be relaxed about siblings.

No absolutely not 😂.

I won’t be making another cake when Dsis has already paid for a professional one which was expensive and with having time off from work she literally can’t afford to pay any more for this party - especially not for uninvited guests.

Amy doesn’t want any extra kids she doesn’t know there and younger ones wouldn’t be allowed in some areas and older ones might take over everything.
Some people might be relaxed about siblings but it looks like the majority of people aren’t so it’s not fair for some parents to try to pressure people to invite them for their own convenience when it has a negative impact on the party.
Reading some previous posts it seems asking people to pay extra for siblings entry and meal doesn’t guarantee you won’t be left to pay it if parents just drop off and leave.

Luckily a pp said all children need signing in, paying for and given wristbands to show they have paid. I checked this and luckily it’s correct so that’s made me feel much better about anyone being dropped off and sneaking in, if they are dropped off somehow I’ll be ringing the parents to pick them up straight away.

I put my message on the WhatsApp group just now and cut it down a bit as some people have pointed out if it’s too long it might not all get read or just ignored. I think it’s covered everything and I’ve made it clear Amy only wants invited children and I’ll only be responsible for those invited.

I’ll update but hopefully my message will just be acknowledged without anyone trying to change my mind 🤞.

OP posts:
krustykittens · Yesterday 14:47

Good for you, OP!

cadburyegg · Yesterday 15:10

I think they are trying to take advantage of you op with you not being the parent. Add in the fact that it’s half term and they want their kids to be entertained for nothing.

Well done for holding the line.

As a single parent I found parties tricky when my kids were younger but now they are 11 and 8 I can drop and go. There’s no way I’d entertain siblings at a 9 year old’s party, that’s ridiculous

ParmaVioletTea · Yesterday 15:38

Excellent update @ThePetiteMermaid !!

YouputthetwatinKathleen · Yesterday 15:50

Well done @ThePetiteMermaid ! You should hire yourself out as the Put Upon Party Parent Wing Woman!

ThePetiteMermaid · Yesterday 16:10

YouputthetwatinKathleen · Yesterday 15:50

Well done @ThePetiteMermaid ! You should hire yourself out as the Put Upon Party Parent Wing Woman!

I can hear a new career calling… 😂

OP posts:
Tonissister · Yesterday 16:16

.

Coffecakeicing · Yesterday 16:21

Your niece might be nicer/easier going than my girls, but age 9 they definitely wouldn't have wanted an extra sibling at their birthday.
Absolutely not.

Puzzledandpissedoff · Yesterday 16:27

It seems asking people to pay extra for siblings entry and meal doesn’t guarantee you won’t be left to pay it if parents just drop off and leave

Exactly, @ThePetiteMermaid

Luckily a pp said all children need signing in, paying for and given wristbands to show they have paid. I checked this and luckily it’s correct so that’s made me feel much better about anyone being dropped off and sneaking in, if they are dropped off somehow I’ll be ringing the parents to pick them up straight away

It's good news about your venue also signing them in upon payment, but you won't be able to call the parents if they switch their phones off (which IME CFers tend to do)
So personally I'd have a Plan B with something like the books a PP suggested for any "extras" to use in reception. You can always leave the parents a message - their fault if they don't pick it up - and if venue staff ask about the kid in reception simply say they're nothing to do with you

ReadingSoManyThreads · Yesterday 17:00

Personally, as I give zero fucks these days, I'd have wrote "Hi Lucy, I've heard you have form for leaving off a sibling at peoples birthday parties. Just letting you know that this will not be tolerated at Amy's party, any sibling abandoned by yourself will be left for the staff to deal with, which I imagine will involve them reporting child abandonment to the police." 😆

Mummybassist · Yesterday 17:44

I have a 9, 4 and 2 year old. At 9 it is drop and go, no need for siblings to also attend. For the 2 and 4 year old (usually softplay) I often ask if I can take both to avoid driving back and forth. I always offer to pay for the uninvited child and would not expect them to be fed or given cake or a party bag!

EmpressaurusKitty · Yesterday 17:50

Coffecakeicing · Yesterday 16:21

Your niece might be nicer/easier going than my girls, but age 9 they definitely wouldn't have wanted an extra sibling at their birthday.
Absolutely not.

At 9, I wouldn’t have thought any of the guests would want their siblings along either.

Redragtoabull · Yesterday 18:28

I would respond along the lines of ...

'No extra children will be taken, the number of places WE have allocated for neices party activity are filled. If child X can not attend now, please let me know ASAP so their place can be offered to another child'

Cheeky fuckers!

Mangochutney33 · Yesterday 18:41

EmpressaurusKitty · Yesterday 07:24

You’re a terrific aunt, OP.

Just about the sweets - most Haribo contain pork gelatin so probably safest to look for a veggie option.

This is so over the top. Like OP doesn't have enough to think about. She's already doing a massive favour to the niece's parents, one of whom should be taking the day off work to give his DD a birthday party not dumping it on someone else. Now she's being expected to make up party bags that the child's own parents had no intention of making. If OP wants to do it, it's fine for her to buy whatever cheap sweets are in her local shop for 50p and if the parents don't want their children eating them they can deal with that themselves upon collection when the party bags are being given out. There's really no need for OP to go around reading ingredients lists trying to cater for all and sundry dietary preferences.

Mangochutney33 · Yesterday 18:52

AguNwaanyi · Yesterday 12:46

There's always that one who takes it too far. Some of you are actual safeguarding risks for children. If you would put the child at risk you wouldn't be "nice".

If you want to be big and bad, better to tell the parents that they either pick up their kid or you will call social services, and mean it.

I'm not a safeguarding risk to any child I'm responsible for. I'm also not going to spend my life on hols in a phone queue when I'm supposed to be doing my nieces birthday party and I'm certainly not ever going to be hanging around with an abandoned child for hours until social services shows up. Putting them in a taxi to their home address is safer than leaving them to run around the venue/street/wherever they end up unsupervised. The parents in this scenario have already been told that they're not to drop off siblings. They'd have another message from me about the taxi and if they didn't pick up that message that's their problem. By being nice what I meant was I wouldn't speak harshly to the abandoned kid I'd explain their parent has "accidentally" gone home without them "by mistake" but not to worry because there's a taxi coming to take them home. If you think that makes me not nice because I won't tolerate CFs or don't operate from an assumption that all taxi drivers are paedos, that's fine, you can think whatever you like, I really don't care.

greenpolkadot55 · Yesterday 19:04

I'm reminded of a party that my youngest dd went to years ago.
Two different mums dropped off the 'guest' and a sibling and slotted off. Despite being told on the invite that no siblings could be accommodated.
When it came time for tea the two uninvited got themselves a seat at the table. There were only enough seats for the real guests so two were stood awkwardly to the side.
Party mum takes the two interlopers away to seats at the side and peace is restored