First world problems and all that...
DS turns 5 shortly and is having a soft play birthday party. About 20 kids have been invited.
At least 4 parents have responded with, 'great! xx would love to come. BTW, we need to bring xx sibling, they will only play, we'll get their food'.
The party booking form clearly states siblings must be paid for. It's £12 per head. Final numbers given the day before.
I'm probably completely overthinking it - but the siblings are pretty much all younger so the parents won't leave them to just play and eat in their own.
They will end up being part of the party and frankly I don't see why I should pay for them!
Do I tell the parents they need to give me £12 in advance of the party?
Do I let them sort it on the day and not tell the venue in advance?
What have you done in a similar position?