Here is my car rental advice - once you reserve, keep checking for lower rates to your rental. We rented with Dollar - they had the best minivan rates at the time for our family of 5. We did two one-way rentals (MCO to WDW to PC then PC to MCO). I checked the various rate coupons several times and ended up rebooking several times because the rates kept going down. I think it went down a total of $100 between the two rentals from the initial booking. The price would sometimes changes even on the same day. Also, I found it easier to drop my family and luggage off at the ship then went to drop off the car rather than keep the family together the whole time.