If the agents are busy, I hold my card up as I walk past the desk into the lounge. If they want to look at it more closely, they'll motion to me to do so -- usually, however, if they're with another passenger, they're too busy to do more than nod at me.
If the agents are not busy, I'll hand the card to them for their review.
I never show the EXP card if I'm just trying to get in.
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Party in the Metroplex -- September 21-23, 2001