In order to avoid that problem, and because the cruise is more than just an opportunity to ham, I just did all my hamming while at sea in international waters with my Bermuda reciprocal license (ship registry).
From a satellite operating perspective, there were only a few times a day
to do anything and from our itinerary perspective, we had four days at sea so it worked out well for both the hamming and the family and fun.
Jerry NØJY
I always wondered how folks on a Caribbean cruise kept track of their reciprocal licenses. Leaving Florida the fcc license is good. Then you might hit international waters where the license needs to go with the ships registry, historically Liberia or Panamanian. Then the question is keeping track of what country's waters you are in at the moment. This may not even be someplace you are visiting if the boat is cutting through.
It seemed too much of.a paperwork headache for me.
Charles AA1VS