My October vacation is booked through AAA. They had a $200 savings over the Disney site for 4 (DH, DS10, DD9) for 5 nights at Paradise Pier + 4 day tickets. We don't need the free parking perk, but my kids like the free pin/lanyard. We also don't bother with the preferred seatings, Mickey's Morning Madness, or character calls.
When I booked, the agent told me she would honor any price difference should Disney offer a fall promotion. She later called back and said she couldn't. It's been a moot point since no fall promotion has been announced yet, but it's a big enough error that I won't book through AAA again.
I've found that Costco is actually the bigger savings, with a Character Meal as part of the package, but they don't offer 5 night packages.