A guy I used to work with had a knack for winning pretty regularly at the blackjack tables. He would watch how the other players played for a while before he'd decide if he was going to play at that table or not. He said the worst thing for a savvy blackjack player was a table with beginner and stupid players.

He worked third shift and several times came into work straight from the casino with thousands of dollars cash on him. The 3rd shift supervisor found out he had brought $18k cash in winnings with him to work one night and jumped his ass royally for it. Supervisor told him he better NEVER bring anywhere near that much cash money in to work again as he was responsible for his as well as other employee's safety and he was making himself a big target to be knocked in the head and maybe even killed with that much money on him.