Wow! How did you find that? I can never find what I need on the Disney site.
I had already called and it didn't seem it would help us - they only showed availability (at least for our dates) for PC, POR, CB.
Now I used the link you gave and played around with changing hotels and shortening the dates (figuring I could keep current room only AAA ressie for the remaining dates). I was able to get a special at WL for shorter dates, but only CY room. After combining the extra 3 nights at our current rate, it came up $99 higher! I didn't calculate far enough to see if the package was better than the AAA rate at POR (our 2nd choice resort), since I really don't want to switch resorts at this point.