And if you are doing the booking yourself and trying for a AAA code be sure to try as soon as new codes become available (may have begun already - check other threads). We tried early January 07 for our December 07 stay and there were none available (gone already). I called several times a month, every month through August 07 and none popped up. I even had the CMs check one day at a time and still none. I had much better luck using an AP discount when released. Subtracting the additional AP cost from our AP savings still got us a good deal even though we're only staying 7 nights (but that is not any guarantee; depends upon your room and dates).
And I always just go ahead and book the kind of room I want and have any discounts applied to that reservation; this has worked for me several times.