Just got a GREAT deal from Budget on a Ford Escapade over March spring break with pick up at FLL and return to MIA with no drop off charges (none of the rental agencies charge for FLL/MIA). Gives us a car for the 1 ½ days we have before our cruise and transfers from FLL to the port. Go to www.budget.com and hit on specials. They have some other vehicle/places too.
Thanks for the info. I rushed to budget.com and found they are closed for maintenance. I will try again later. We also have good luck with rental cars at hotwire, but I do not know if you can return them to a different location and there are no cancellations.