Not very good.
Rarely a decent game but usually poor pen and mediocre rules. I had a friend on a cruise with his wife. He was playing blackjack, looked up and the pit boss was a guy who used to give him a ton of heat in a land based casino. That was the end of that. I always wondered if, say, on a water based casino such as the places in Shreveport, whether the captain of the boat can overrule any actions the onboard casino may take. Maritime laws can be tricky.