To Eric's point, there is a major amount of consideration by the Cruise Company to insure the safety of the ship and the passengers. Also they have to consider their passengers. What is there to offer them while in Port. Where are they going? What are they going to do there? Are the roads passable? If they are, are the beaches inhabitable? Are they just going to offer a Visit Devastated St Martin/Sint Maarten excursion?
To Carol's point, the effects will be very positive. Getting tourist money flowing again will be very helpful without the burden of housing and feeding 3000 visitors. But there has to be something for them to do and see.
Like being between a rock and a hard place. Time will tell