I'm leaving for Pride of America cruise in 2 1/2 weeks. I've been doing my homework though and the $39 charge is for 4 hours, then the rates go up from there. I opted to get rental cars through other agencies. They have shuttles every 10 minutes. Pick you up from port to take you to the agency to p/u your car, then return the car and they will shuttle you back to port. Have fun cruising.