I've booked at several hotels using my AAA discount and I don't think I've ever had a check-in person ask for my AAA. That said, I'd be too afraid that the one time I bent the rules a little bit, would be the one time I was asked for it. I think our AAA membership is $69/yr. That's for both of us to have roadside assistance, so if you only want the travel discounts, you'd just need to have membership for one person that that's around $45 or so. Considering I've seen discounts of $80+/night depending on resort and date of check-in, I think AAA is definitely worth the money spent.