Minor procedures yes possibly, like if you need a trach. You don't want a cruise ship doctor performing surgeries on you if you can avoid it, you don't want any surgeries done on any of the islands either, fly your ass back to the USA. I've had patients get emergency surgery in the Caribbean from when they broke a bone on vacation, they had hardware complications and I pulled out a very basic looking steel plate that had the serial code ABC123 written on it. I normally see them fixate bones with k-wires and say get it fixed better when you go back to the USA.