Which “this” ?

The US can presumably not shut down all cruise travel globally, but it should hopefully not be difficult to close all US waters/ports to cruise ships.

Not sure that the federal government can shut down movie theaters or sports stadiums, but state/local health departments regularly shut down restaurants that spread diseases or violate heath codes.

Perhaps some sort of carrot and stick approach? You can shut down now and we will help you with stimulus funds.

Or you can try to continue to operate (perhaps with additional local heath mandates that are very costly to implement such as deep cleaning every theater after every show), but when (not if) you go out of business when customers eventually stay away because they realize it isn’t a good idea to go see a movie now (or because Hollywood postpones the launch of every popular movie like James Bond), you will be on your own.

Personally, I see a lot of small businesses that are marginally profitable go out of business when just a small percentage of the population decides that going out for dinner or shopping at a small boutique for non essential products right now is neither wise nor needed.