So my it's my DN2 birthday this week and my SIL said he didn't need a party as he won't remember but wanted days out with the family. They are going out with SIL family on sat big day out and they want us to go on a big day out with them the next day. However the location, on which they are fixed is over an hour away from us but most importantly my DF won't be able to attend as he has recently become somewhat disabled. He adores all the grandchildren and will be desperately disappointed not to be able to go. However he has said it's fine he doesn't mind go ahead without him etc. AIBU to say we are not going unless they adapt to include DF? I have suggested they carry on with out us if the location is important and we will arrange an inclusive day ASAP.