If the intent is to go right back to the BVI I would use Redhook. It’s much cheaper and faster to drive them to redhook than go around to Yacht Haven Grande with the boat. In addition you will spare them the initial upwind slog as a trip intro. They will get a nice pleasant ride from Redhook. If you plan on overnighting on STT by all means stay at YHG. Not cheap but a great experience. I would not leave a boat on the wharf unattended after dark.
G