I can't come up with an example, but I've seen different CAA and AAA rates too. Usually the difference is because one is a cheaper 21-day prepaid rate and the other is just a regular discount. I'm a CAA member and I use either AAA or CAA rates and would assume that an AAA member wouldn't have a problem getting either rate as well. For that matter, I assume a non-member wouldn't have any problem well, since I've only ever been asked for my card once or twice.