We did this during our stay last summer. I had originally booked (1 day rental) at the Car Care Center, but then saw that the Swan/Dolphin Alamo was the same price. It actually worked out better, because we just went from our morning at Hollywood Studios to the Dolphin and picked up the car. We were offered a choice of 3 cars (2 full size, which we booked - Impala and Optima, as well as something "fun" - which was a softsided Jeep Wrangler) Opted for the Impala since we needed space for our luggage! We didn't need to worry about booking/waiting for a shuttle from the Car Care Center. I figure it probably saved us a lot of time (which is valuable on a vacation!) When returning, my husband dropped the car off (does not need to be during business hours) and took the bus back to one of the parks, then grabbed the bus to our resort (which was POP) Super easy!