Posting on AIBU for traffic because I can’t work this out without really upsetting someone. My daughter is due to have her birthday in October. She’s picked an activity that has a party package available but it’s for restricted numbers. Luckily she has a small class. Unluckily, there’s only 8 children allowed and there’s 10 girls in her class. One is away so we would literally be leaving one child out. I’ve contacted the organisation and there’s no wiggle room on numbers at all. My daughter has picked her friends from the class and is happy, but I feel awful leaving one child out. Should I just get on with it and hope the child doesn’t find out? Or contact the mum and explain and hope it’s ok? Or send out invites and hope someone can’t attend and then I can invite the extra child?