Parking spots? What parking spots? Forget I mentioned it.......
Just kidding!
The AAA parking spots vary at each of the parks. Before I go I always swing by my local AAA office and aske for the "Diamond Lot" parking pass. At MK this allows you to park way up front, a very short walk in to avoid the tram altogether.
At MGM you again get to park way up front thus avoiding the tram. If all those spots are filled then you get to park on teh very end of the current row.
I can't recall where it is at Animal Kingdom or Epcot.