Ok - so it is my son's 7th Birthday on New Year's Eve and I had organised a meal at a restaurant owned by a friend for his Birthay. My DH, DS, DD, and MIL & SIL were booked to come but now my SIL's new partner's sister is having a party my husband's family have cancelled us and opted for the sister's party. AIBU for thinking they could come to their nephew/Grandson's Birthday meal first ( it is at 6.30 - so not late) and go to the party late? One of the reason's I thought it would be nice is that they aren't seeing us over Christmas either so won't see the children until the New Year and considering both children have Birthday's and Christmas in December I would have thought they would try and make the effort to see them.
AIBU or should I except they don't see it as a priority?