Every year for as long as I can remember, we've had Christmas Day at my Mum and Stepdad's with both my own sister (and her growing family) and my step-sister with her family. Other than by marriage of parents, I am not related at all to my step-sister and we are not close.
Mum is finding it too much having 15 people at hers and can't cope with cooking the dinner anymore despite us helping.....admittedly it is utter chaos. IMO 15 people is way too many and it makes for too many people to see all the gift opening activity so things get opened and I've no idea whether recipient liked it as I never saw them open it.
I'm happy to host at mine but don't want 15 people and have no interest in having my step sister and her family, we are not close and have nothing in common other than our parents are married. The suggestion of only inviting parents and my sister didn't go down too well with parents. I've suggested eating out for Christmas Day with everyone but that also didn't go down well due to financial reasons. Christmas is worse than wedding politics, lol!
AIBU? My home, my choice etc? Should I just get on with making plans for my household? Am I being rude and selfish? This crops up every year and it drags me down (not to mention Mum ending up in tears cooking dinner every year).