Question about booking a room

[Pooh Girl 71]

I am going to book the $25 a night room at Courtyard by Marriott in Downtown Disney. I have 3 extra nights that we will be going and they want $109 a night. Can I book via the phone and use my AAA card for a discount? The AAA rate is a lot cheaper for those nights. I realize we would probably have to check in out again and possibly change rooms but that is not too big of a deal. I am just wondering if they would have a problem with me using those 2 discounts. Thanks!