From a poker player student/friend of mine:

"I was at my 5/10 game last night at the casino and people at the table we're talking about the previous night at about midnight on Sunday if you went to the players card kiosk and swiped it, everybody had $500 cash to be redeemed at the cage as a promo. No matter what.

It was obviously a glitch that everybody took advantage of. They ended out giving the $500 to 110 people before they realized what was going on, and just shut off all the player kiosks ????"