No cruise ships in port at Tortola or VG so you picked a great day to visit VG! You’ll have ~5.5 hrs on the island, and renting a sedan from Mahogany is a good option if you plan to venture out of the Valley area.
If you are just planning to enjoy beautiful Savannah Bay, the Baths and Devil’s Bay, Mad Dog’s, and Spanishtown, consider working with one of the taxi drivers at the port. You can get dropped at these spots rather than renting, and taxi fares are not that bad. We’ve done that and they are happy to coordinate that with you!
Just a thought if you want the nice beaches, lunch with a view and not driving the island.
.
