
The last family vacation to NYC left me at wits end because my oldest DS (15) at the time drove me nuts. He hated everything, he thought everything was stupid. Our last family vacation to WDW he was a total poop.
My DH said, "Hon, it's a phase. He's a teenager now, wanting to spread his wings, and definitely doesn't want to do anything that isn't perceived as cool by his friends." So, this summer I wanted him to go to Paramount's Kings Island with us and I told him to invite a friend (at least it would be a family outing but he could have someone to talk to as well). En route to our destination I asked his friend what rides he liked. His friend said, "Well, I've never been to an amusement park."

I said, "You've never been, ever? So, what do you do on vacation?" He promptly replies, "We go to museums and art galleries." Fine and dandy, very educational, so, I say, "What about stress relief?" He says, "I read." Ok. This is my DS's best friend, so, I didn't want to offend him. I told him that in our family we believe in education and appreciation of the arts but without imagination and dreaming none of those could exist. My oldest son, so far, has not become the person who I had hoped would enjoy my sense of folly but I have accepted it as best as I can. Now, my DH and I vacation with our youngest DS who absolutely couldn't care what anyone thought about him acting silly (he wore a kilt to
MNSSHP for goodness sake and he's 14 y.o.) and he totally gets into it. We do allow for him to have down time at Disney Quest to be with others his age.
So, all in all I totally understand and feel for you.

When we do vacation together, ours still fight and carry on, it's just easier now to do simple, short family excursions.
Best of luck to you.