My daughter birthday party is coming up, I'm having the party at a pizza place, I need to give the place a head count 3 days before the party. I want to make sure I get enough pizza for the kids. I would hate to run out but I don't want to have to much left over. I was thinking about putting on the inviation kids that RSVP lunch is provided. Is that rude to put? If kids that come and don't RSVP there is a buffet there parents could pay for.

They are little kids and can't help it if their mom or dad doesn't RSVP.