As long as the room isn't already discounted and you're a valid
AAA member, you should be able to switch your reservation to the AAA rate...When in December are you traveling?? If the
Free Dining Promotion is extended into December (which it usually is), you would even be able to switch to that promotion (along with the AAA rate) when it comes around.
I'm an AAA
Travel Agent, so message me if you have any other questions!!
