So I am having a total brain cramp. There is a car rental company that has 2 locations on Disney property, 1 being at Swan or Dolpin...can't remember is it Alamo?
Advantage to this location : They will send a shuttle to pick you up and take you to your car & reverse the service when you are done with car. Also their hours are : Monday to Friday 6:00 a.m - 8:00 p.m.
Saturday & Sunday 6:00a.m. - 6:00 p.m.