in the Caribbean
Wi-Fi Directory: Discover who has free Wi-Fi available. It's available on many islands.
These are most easily found in the cruise terminals or near the cruise ship docks because crewmen want easy access to contact their family and friends back home.
Unfortunately, no one has a complete list of Caribbean Cyber Cafes yet. But these sites will help.
At Sail on Line lists the locations where you can send email from.