Has anyone ever rented a car on site at WDW? We are going to be there for 2 weeks and want to include US/IoA into our trip. But since our hearts belong to Disney we are staying on site the entire time. Now just trying to decide if we should take a taxi or rent a car for the days we'll be heading out. I'll be with DH and DD3. (So carseat advice is needed also) Any suggestions/experience?