1 additional driver is, at the moment, being offered as free of charge, which is a bonus if you have someone to share driving with. We drove to Tampa to go to Busch Gardens Park..Mrs B drove there, and I drove back .......we did the same for Kennedy Space Center, and Miami, which is quite a drive.
One thing, tigwig.......I would recommend when you book the car to add a Sat Nav to the booking....they are not normally inclusive, unless built-in, as they are a must and makes sure you never get lost.
Enjoy, tiggy x