Mostly the hotel discount when I travel while racing. they offer a lot of other discounts as well. They are big spokes people for the rights of elderly and retired people. The only drawback is the constant sometimes a few times a week mailings from them and/or their advertisers trying to sell you " AARP sponsored " insurance , financial advice, investments etc. I thought you had to be 60 or over to join but I could be wrong. It is worth joining however