The Rio and Planet Hollywood are running a promotion for a free buffet after earning 50 points in a day. 50 Points is $500 coin-in on video poker or $250 coin-in for slots. The promotion runs until December 31, 2015.  After you earn 50 points at the Rio or Planet Hollywood, go to the Total Rewards booth at that casino to redeem for a free buffet at that casino. It is only limited to one  redemption per card, per day, so you can use it multiple times through the end of the year.