We will be camping at Cinnamon Bay and want to do the Reef Bay (organized) hike. Do we really have to go to Cruz Bay to pick up the transportation to the trailhead? Can we go directly to the trailhead? And how do we get there? Hike? Taxi? We are a group of 6 teen Girl Scouts and 2 leaders. All in fair to good shape. Trip is 2 weeks from today!