So one of my college friends backed out of attending our wedding after we gave in our final numbers because of complications with her pregnancy. Totally understandable and I can only wish her the best and not at all annoyed. Since I have already paid for her and her husband's meal, would it be really rude if I told my two single college age cousins that if they have a guest they want to bring, they can? Does this cross into the B-listing zone too much?