Cruise lines are waging a war on drugs. Lately the big floating pollution and bacchanalia machines have been pulling out all the stops to prevent marijuana products from getting aboard. Carnival Cruise Line has started bringing a squadron of drug dogs to root out the druggies and drag them back to land. According to a report from the Wall Street Journal, passengers are confused at the sudden about face, as they’ve previously openly smoked or consumed edible marijuana with no repercussions. Other passengers say they’ve been kicked off their ship in a foreign port, or received lifetime bans from cruising.