Whiskey in the Listerine bottle, Vodka in the water bottle. They know all the tricks at the pier. Sometimes they're pretty lax and sometimes they'll confiscate. Is it really worth saving a few bucks on drinks? Would you sneak a flask into a bar to avoid buying a shot with your friends?
I guess I've never understood the whole concept of trying to get around the system. Was raised different I guess. Thanks Mom!