They were 3 Cuban nationals. Check the map - the Cay is closer to Cuba than to the Bahamas...
Thanks!
A sociologist decided to study the manners of three nationalities, so he rented three deserted islands and hired two man, one woman teams to live there for three months with sufficient life sustaining materials.
He went back and found the three Brits sitting at opposite areas of the island. "What's wrong?," he asked. "We haven't been properly introduced," they replied.
He then checked on the island with the Italians. They all seemed happy and explained life was easy in the tropical clime and the men just alternated nights sleeping with the woman.
Next stop was the Russian island. Things were not going so well here. The men had figured out how to ferment coconut milk and were passed out in a drunken stupor. The woman was doing all the work just trying to keep everyone alive.