My DC both have birthdays at end of January, they are teenagers, it's been a horrendous couple of months for finances with just about everything going wrong and Christmas etc. Anyway we agreed with the DC that to celebrate their birthdays we would keep things fairly low key and go out for a family meal at a restaurant they like, both happy with this arrangement. They will obviously get presents and everything as well.My eldest DC has now said that on the birthday weekend she wants to invite a couple of friends over to sleep (birthday is on the Saturday, family meal out the day after). I have no problem with the friends sleeping over, but DD Is now saying they are going to go for a Nandos and see a film. I have said to DD that if she wants to do this friends need to pay their own way as can't afford to pay for all 3 of them to go movies and Nandos and will be paying for the family restaurant meal the day after which is the " official" birthday event. DD says I am being an old meanie and we should cover costs for friends as well as part of her birthday celebration. I don't want to be parting with the best part of an extra £100 on top of everything else am paying out for the birthdays. AIBU?