Well if you're cruising they don't check you, and you can also smoke it in International Waters, cause I did, walked right on the deck smoking, some people were just like "Smoke it up!" some of the older people knew what I was doing and wasn't concerned, alot of the crew just smiled and kept walking. No one really cares about pot if the laws don't and in International Waters, they don't. But yeah, if you're taking a cruise down there, just stuff it in your pants, and do that on the plane too, plastic bag, no carrying metal cases, etc.