I dropped my rental there yesterday 8/18/22 at 6:30pm. There is a Speedway gas station right there so no worries about getting gas. I filled the tank, drove around the back of the station to the car place, and parked (
Alamo). There isn't any actual "car rental return" lane like you'd find at the airport, just parking spaces with signs. An agent came over to meet us, checked the gas level of the car, and then had us hop in a shuttle van and took us to Riviera, but we could have asked for anyplace on Disney Property (including Disney Springs, but we were having supper at Topolino's, so this was easiest!).