leaving a cruise early

can you leave a cruise mid trip for example leaving new york and traveling to st thomas and getting off their instead of returning home? i fully expect to pay full price but is this even allowed? sorry for the non caps i just got a chromebook and cant figure out the caps lock yet..lol

In general, yes. Cruise lines usually want advanced notice. What, I found they don't want you to do is skip a few ports and reboard.

People from St Thomas do this. You do have to contact the cruise ship and get special dispensation.