I would definitely plan 2 trips for dingy with 10 people. In July the A/C will be welcomed. Can't say enough good things about Leverick! Email/call ahead for slip reservation and also car rental (Actually likely to need 2 cars for 10 people). Tour VG by land... If Cruise ship present, go to Baths either very early or late (After 3?) Hog Heaven is great for Lunch (Try the ribs!).

We often stop at the Baths for lunch without going to shore.(walk thru the Baths on our land tour of VG).

Most of all, be flexible. Remember you will get a chance to see other things on your Next Trip....Next year.