To get in, you must be 18 or older, show your passport to identify yourself (drivers licenses are not accepted) and pay an entry fee of 18 euros (aboutR$19). After that, it is up to you as to how much money you want to lose well, spend at game tables.
The citizens of Monaco are forbidden to enter the gaming rooms of the casino. The rule banning all Monegasques from gambling or working at the casino was an initiative of Princess Caroline, the de facto regent of Monaco, who amended the rules on moral grounds.