One Atlantic City casino is receiving a fine for incidents involving underage gambling. Showboat Casino got the $20,000 fine. The Casino Control Commission handed down the punishment for allowing a 19-year-old to play blackjack and for allow people between 16 and 20-years-old to buy chips. In other news, the Casino Control Commission had Showboat give up $2,315 that it seized when a man on the state’s self-exclusion list was playing at their casino.