Cowsurf,
Where 'south of the border' could you carry legally as a non-resident alien?
1. The cruise line won't allow weapons on board their ships.
2. Try to take a gun to Mexico, Beleize, Hondouras,Guatamala, Costa Rica or
Panama. You are going to eat a lot of beans and rice three times a day for
a very long time.
3. I do not do cruises any more, but if you go, stick to the tourist section. You
will be O.K.