Hello from Va. U do not need a drivers permit per say, included in car rental.. But if I were u I would hire a taxi for the day. They are quick to take u want to go, or let him take u to one end or the other but I sure u can not do the who island in one day...So decide what's areas u want to explore!!! Let taxi do the driving, since u have to drive on the left side of road!!!!!! Fun driving but stressful as u will make a turn and drive on wrong side of road and meet a car head on!,,,