Is it me being old fashion or would you think it is still good manners to respond to a RSVP? DS is having a birthday party tomorrow and not one single parent has RSVP back if they were coming or not, I put my email and phone # on the invitations, I have even emailed them today to ask, told them I was trying to get a head count and still no one has responded. DH says to cancel the party but I have already but a deposit down on the place and DS is so excited about it, it would be my luck I cancel it and everyone would show up. What am I going to do if we get there tomorrow and no one shows, I'm already so mad that I feel like calling them and telling them to forget it. Am I being petty? I don't know what to do.