Interesting isn't it. When I go in they say that's OK you don't need your card. A few do request the card like in Vegas. Usually if you are staying a week you get a better discount anyway. I also found it intesting with PPA. I was in one of their parks in WA. I paid for the night and the price was what PPA said I would pay. (I was checking their prices Vs regular pricing) After paying I mentioned to the girl "Oh by the way if I'm a PPA member I only pay half of that price, right?" She looked kind of sick at that moment. I said that is Ok I'm not a member. Nothing more was said.