Perhaps because they can lose their license if they get caught allowing it.They take it so serious because the penalty for not taking it serious is draconian.The Borgata just got fined $105,000 for letting a twenty year old play BJ before carding him and kicking him out.They also were fined a seperate $75,000 for allowing a couple of underage persons into a nightclub,and the security manager was fined $1,000 by the state and suspended two weeks by the casino for not notifying Gaming Control in a timely manner.