Guess I will be the only one to say unless the people you are bringing are NOT new to the island, I would rent one car, over the years when we have brought other couples and kids we always rented a van type vehicle or smaller 6 passenger cars and never had an issue parking or getting around. Plus it's fun traveling together and site seeing. Plus you won't have one couple "left out" traveling alone. Newbies could be very intimidated driving on then island - heck I know someonr who has been going for over 40 years that won't drive there!! <img src="http://www.traveltalkonline.com/forums/images/graemlins/Kiss.gif" alt="" /> So I would just go with the bigger car.