One of the most popular comps (short for complimentary) that people value are the free rooms given to players by the casino. If you don't meet the requirements for a free room you will more than likely qualify for Casino Rate which is another valuable comp that is fairly easy obtain. Casino rate is the discounted price for a room at the casino. This rate is 25 - 50 % off the Rack rate, which is the price you are quoted over the phone when booking a room through normal reservations.