I just called Disney Reservations, because my family has AP passes, and I booked a room last week. I elected to NOT use the FT package, because the rate was higher than just booking a regular room (w/out passes). After reading these postings, I called Disney. Here's what I was told:
If a cast member is caught allowing a guest to book a room under the FT package, and not include all room guests as FT package members, that cast member will be fired. If a guest attempts to check-in, without all room guests as members of the FT package, the other members will either have to be charged the FT rate, or reserve another room. He told me the FT package will not allow guests to stay without the UPH passes included (unless the guest is under 3 years old).
The good news is that his supervisor told me (yes everyone, I did ask to speak to a supervisor to make sure I was getting accurate information) that he's 99.9% sure AP rates WILL be available for the fall. This was after I stated that my AP pass was useless to me, with the FT package available to everyone.
If I was one of you who successfully booked through the FT package for one guest only, I'd hang-tight and check-in as you normally would. You've got nothing to lose!