Drug sniffing dogs and hefty fines: Duffy gets tough on unruly Carnival passengers 6 March 2023 Carnival Cruise Line president lays down the law on passengers displaying anti-social behaviourAuthor: Capt. Johnhttps://www.tradewindsnews.com/cruise-and-ferry/drug-sniffing-dogs-and-hefty-fines-duffy-gets-tough-on-unruly-carnival-passengers/2-1-1414069