People who book those types of cruises--be they from a ship or staying on the island--are not going to do it to gawk. It's pretty hard to hide the fact that you're there to gawk, in a small group. People who come to SXM on a ship can be, and ARE in many, many cases, SXM lovers and nudists, just the same as those who stay on island. There are many gawkers on Club O beach that are staying on the island.

Regardless, as someone else said, in general, ships are not in port long enough for cruisers to be able to book this type of excursion.