I don't know your situation, but even though family is very important and this is only a vacation...tread very very carefully. I speak from my own personal childhood experience that Disney vacations were the only place my family got along.
Yes, I said that and mean it. Before and after vacations, no communication and fights. During vacation, "Oh, we were happy-go-lucky people" or so that is what my family tried to portray while in the parks. Whenever we got back to the hotel room, my parents would fight/leave, more so leave and us kids would have to stay put in the hotel room by ourselves.
Yes, life is short, but if one blow-out is all you guys had, I would talk. Get it out, a.k.a communicate! However, if there are problems stacking up that have been stacking up for years and talking hasn't been the solution and nothing has changed for the positive, well, life is too short.
I say all of this because I had to make a very hard but long coming decision with my own family and had to cut ties and go No Contact, but that is the ultimate extreme move to make. From what your first post sounds like, I think something just got lost in translation and things need to be talked out. But again, I don't know your personal situation.
I just know this, at the end of the day, you gotta look after you.