Mo, I'm sorry it's taken a while for this reply - our system has been 'down' so only saw your question recently.
I used the AAA card when I booked Coronado Springs resort last December. The quoted rate for 2 nights (and what I paid) was a total, including tax, of $236 which she told me was a good rate. I must admit I did not take the trouble to find out the regular rate but it sounded to me like there was a discount, and again, I was told I had to produce my AAA card at check in.
Hope this helps.