NCL Itinerary change

Because of Irma, our holiday cruise itinerary has changed from East Caribbean to West Caribbean. We were looking forward to going to St. Thomas and Tortola but now have us going to Falmouth, Jamaica, Cozumel Mexico and Grand Cayman. Not particularly the spots we wanted to go to. NCL says we are stuck with that itinerary. Anyone have any suggestions for excursions for those ports and is it possible to get refund or credit for this trip? I'm sure the very fine print says we are stuck. Thanks

Grand Cayman has the feed the stingrays boat trip (awesome) and is great for snorkeling. Cozumel also has great snorkeling but try renting a car and tour the island. The eastern side has beautiful beaches and many beach bars. I think the problem with all these destinations will be the crowds. Most all cruise ships will be going to the western Caribbean in the winter. Good luck, if it were me, I would try to cancel but I don't think the cruise lines will let you. They will find a substitute itinerary.