When we were at POP and needed a car, we just booked it through Alamo, at the Dolphin. Then, the day we wanted the car, we took the bus to Epcot, did the stuff we wanted, walked over to the Dolphin, did the paperwork, got the keys, went back to WS for the night and dinner. After IllumiNations, we walked back to the Dolphin, gave the valet our keys and he drove the car around to the front. Then, and this was so easy...drove to the street, took a left, then a left at the lights and then a right onto Victory Way (I think) and then a left into POP...about 8 mins.