Below is my take on how things stack up, from most risky to least risky. With respect to passengers on commercial vessels, both national laws and international treaties require that the carrier act with a certain standard of care.best best casino casino casino online postrek.com vegas FREE CASINO GAMES SLOT MACHINES ONLINE While the Mississippi Gulf Coast has numerous casinos, almost all forms of gambling are illegal in neighboring Texas and Arkansas. Commercial cruise ships in international waters: Gambling on commercial cruise ships that travel internationally (beyond 12 miles offshore) is legal. I am playing with the idea of a lateral thinking puzzle based around abusing international waters to make an action ' legal '. With gambling, you're probably safe if you manage to escape your country's jurisdiction; in the United States, you'd be outside of any federated state, so I think gambling would. Casino gambling is legal in international waters, so casino boats from Key West travel nine miles offshore into the Gulf of Mexico. On all Florida-based casino boats, you must be at least 21 years old to drink alcohol.