We plan to have one car (wife's Sebring convertible) and two carts. But now that someone mentioned renting a car, that might be a consideration as well. With several friends already there, we could always join up with them for big shopping trips or even borrow their car. Day trips are always more fun with friends (IMHO).
However, when it comes to insurance it is always cheaper to bundle coverage, i.e. home, car, cart, etc.
That being said, will probably always have a car. Like previously mentioned - cold weather, severe storms, etc.
Finally, you can't beat a convertible ride in the countryside during Spring and Fall!!