Hi - I just called the phone number on the Alamo site, and it brought me directly to the Disney World operators. The CM that answered was clueless on the three day PH. She even put me on hold, and came back with "we don't have them anymore." (And yes, I clearly explained what I was looking for.) Did I not ask the right questions? Do I need a different phone number? How long ago did you get yours?
Maddle