If you're going to primarily use the car to get around, I'd recommend either Old Key West or Saratoga Springs. Both resorts car condo-style developments with parking right outside of your unit.
The other 3 resorts have more of a hotel "feel" (interior hallways, valet parking), but you need to walk quite a distance to either reach the self-park lot or to the valet stand to retrieve your car. Of course, if you decide that hotel feel is important, BCV has the closest self-park lot of the three.