We will be on Tortola prior to boarding Cat in April. My husband and I will be there Wed - Sat and kid (6 adults) arrive Fri. We were thinking we would like to rent a van so we can get around and check out the island before the kids arrive and when they arrive on Fri and Sat before we board boat. Is there van rentals for 8 on Tortola or what other suggestions might there be for exploring Tortola?