My mom's family moved to St. Thomas when they fled Cuba so we've made a lot of trips there for familiar-place family vacations. Definitely go to St. John and get on some trails! I'm sure you'll be able to string together a nice adventure there. You should also snorkel the underwater trail at Trunk Bay.
Oooh! Will look into this!
I don't have a lot of control over what's going on but will try to make time to do fun things. Sounds like it will be warm and humid!
It sure will be!
Not familiar with how much things may have changed post-hurricane but you should be able to do taxi - ferry - taxi to get to somewhere great on St. John. Just need the time to sneak away. But really, everyone should go to Trunk Bay. (And Magen's Bay on St. Thomas.)