Two friends of mine are holding a joint birthday party for their children - soft play followed by meal at fast food place. They haven't mentioned anything but I think it's assumed that we'll all pay our own way on the day as well as bringing a birthday present for each child. I want my child to go to the party because he likes the children involved, but it's going to be quite expensive! Should I say something? - and if so how, without sounding mean? I just think it's unfair to hold a party at a place where people have no choice but to pay if they want to go. Advice appreciated!