Carnival Cruise Line had to evacuate Grand Turk early due to incoming weather. This was during Hurricane Ernesto, and Carnival Magic needed to leave the dock before the storm arrived. Such situations are rare but they do happen,

A Carnival Cruise Line sailing has canceled its only port, making the voyage a cruise to nowhere due to post-tropical cyclone Francine. “Carnival Valor will return to New Orleans on Friday, Sept. 13,” Carnival told USA TODAY in an emailed statement.

The cruise line knows that sometimes people make bad choices when they're on vacation and want to keep its passengers safe.

The cruise line wants to keep its passengers safe but also knows that sometimes people make bad choices when they're on vacation.