I just went back to the site and a brand new AAA discount (deeper than the one I previously had) was offered. I adjusted my reservation online and saved over $100 total over the two days--it was now $212 per night plus resort fee. I have a feeling that the amount of the discount and the offering of it depends on the dates you pick. For instance, when I initially booked (that time was over the phone, but the subsequent rebookings for the discounts have been online), the reservation person said that no AAA discount was being given at that time because it was spring break, etc. (Our reservations are for the nights of 4/12 and 4/13.) But my guess is that those rooms didn't move as quickly as expected, as the overall rate for them is dropping, PLUS the AAA discount was added and then increased. All of which is to say that it might be worth booking at whatever the price is now and then continually checking back to see if the rate is discounted, etc.
I hope your dates get discounted too!