I would think you couldnt gamble while in Alaska as you are in American waters. Not sure if they are ever 12 miles out from land. Is there some sort of exception that lets people gamble on board the ship?
2008-Valor and Glory
2009-Spirit and Splendor
2010-Freedom of the Seas and Mariner of the Seas
2012-Allure of the Seas and Navigator of the Seas