of course i'm going to ask the lounge staff. who else would i ask?
don't worry though, i was born in the night, but not last night...
i'm not going to say: "Gee, my card is cancelled, what do you want to do with it?" or "Wow, that worked? My card is cancelled, what good does swiping it do?" or "Why even bother swiping the card. I cancelled it after my points posted. I just got it for free lounge access. Now, gimmee my fake cheese and whiskey."
a couple of the lounge attendants in dtw really like me. i fly delta, who has the amex MR coupon thing going on. When I walk through the doors, they just give me a few amex coupons when i walk in ("so you can just stay a while and don't have to play the game running around to get them") and don't even bother half the time looking at my stuff.