Aibu to only cater for the people who have rsvp

[Thefishewife]

So invited 12 children to dd birthday party clearly asking to rsvp either way before the 27th it's on Saturday only 7 have rsvp

What the hell is wrong with people so basically Aibu to cater for the people who have said they are coming

I not catering for 5 more people than I need to but what if they turn up

I don't really care if people don't want to come but at least let me bloody no

I like the idea of a party bag but with just a piece of cake in, no other trinkets. Still get a bag, meltdown delayed till out the door.