Deposit Casino money to start playing at the casino. When playing with the real money, you feel the atmosphere of gambling, think of Las Vegas. Gambling is not a game, it's an entertainment.  Gambling involves risk, and for a regular casino players it's a cool entertainment. Gamblers deposit real money, as they are aware of casinos and their games.
Gamblers always have high intentions of incrementing their bank, sometimes it is very irritating to them when casinos offer them free bonus and putting a condition of very high wagering before withdrawl, just like putting deer outside a hungry caged Lion.

Comps - Whenever you make a deposit in a casino, you are comped.