Talking about car rentals..which if you are going to an Island, why not explore it and fully enjoy the whole area or parts of it by having a car in your own time, this does give you the freedom to do so, anyway, as soon as you receive the car, check all the tires. I had two flats this trip which caused a huge increase in mileage and didn't know why until the car was virtually un-driveable and then noticed. Go over the car with the guy and note all scratches and dents and I now go one further, I take pics of the car rental so there are no arguments when returning. What I found amusing is that he actually made a note on his copy(not mine) that I had taken pics!!
Interesting.