My friend has freeplay on his card he forgot to redeem last trip. I'm going out to Vegas and he wants to know if I will take his card and play the freeplay and give him the cash I win off it. What if I hit a jackpot? I'm assuming this is in the grey area. Can I get in trouble for using someone else's card? If I got a hand pay I would just say "oh I'm using my friends card" but would I get in any trouble from the slot attendants? How does MGM view someone who uses their friend's Mlife card?