Cruise lines read articles too.
Don't put all your eggs in one basket. Divide the booze up among all checked bags. If the screeners are awake, alcohol clearly shows up. But they can't catch it all. Some will likely get through.
Look for the free liquor tasting the first night.
Look for the mini-martini tasting
Carnival Cruise Line Mini Martini Tasting
If you go drinking on shore, don't miss the boat!