Do they all want to stick together?
Obviously the child will not want to golf.
My kids have been to Disneyquest about a zillion times - now it gives me a headache (and the motion things make me ill) but they do have a lot of fun!
Why not pick a park to go to? Or a meal if it's just while the ladies are having the tea?
I've been so many times and sometimes with a big group (although those trips are not my favorite by far, as we have much more fun doing just what we want). It's hard to please everyone, but I find if the kids are happy, the parents can always find something to keep them happy!!!
Maybe they can book their FP+ for a couple things the child would like, then a quick meal together? Or split up the men depending on what they want.
I am rambling. There is so much to do at WDW that really it depends on what they want. If it were me, I'd plan what I want and leave it to them!!