I called at 7:00 am sharp this morning and was first told that there were AP rates only for moderates ($144/night) and Saratoga Springs and Old Key West...no deluxe. THEN, I called back and asked specifically for what I wanted (WL concierge) and was told that an AP code was available for that. It seems, then, that there is some discrepancy/confusion among the CMs as to what the code can actually be used for. So if you don't get the answer you want (or feel comfortable with) the first go 'round, then call, call again! It will likely pay off!
*I'm not sure what the code letters exactly are...I just asked for the AP rates.