"Total Rewards" is the name of Harrahs Entertainment's customer loyalty program. Like most casino loyalty programs, it is card based and free. To join, just go to the Total Rewards desk in any Harrahs Casino.
You can accumulate points playing table games or slots. As you earn points, you will receive many offers for free rooms, food, flights, and tournaments.
There are several tiers of membership in Total Rewards (based on your amount of play): Gold, Platinum, Diamond, and Seven Star.
Harrahs has dozens of properties throughout the US, with large presences in Las Vegas, Atlantic City, Tahoe/Reno, Tunica, New Orleans, etc. In Las Vegas, Harrahs owns: Caesar' Palace, Harrah's, Paris, The Flamingo, The Rio, and Imperial Palace.
Due to proximity, I usually play in Tahoe, Reno, Laughlin, and Las Vegas. Total Rewards has provided me with free hotel rooms during all my visits to Harrah's properties for the last several years. I have always had good experiences at Harrah's properties; they all tend to be clean and efficient.
Even if you gamble very little, it is worth joining Total Rewards - you may be surprised what you are awarded.