[Pearls Before Swine]

Luckily, cruise ships are familiar with measures to control norovirus spread, since it affects cruise ships so often. Many of those same measures will be effective against this coronavirus.

Possibly, on the food handling side. But, I'm a bit concerned about the air handling problem. If you're next door to someone coughing out virus laden droplets, how sterile is your air supply? If you're in Yokohama with a balcony suite, you can open the door; but if you're in a lower-cost cabin with a fixed window, or more depressing, an interior room, you're at the mercy of the HVAC.

[exDemMom]

Don’t you think that cruise ships would filter the air supply before blowing it into rooms?

In any case, even if the passenger in the adjacent cabin is coughing and sneezing, any contaminated air is going out, it is not being mixed with the fresh air coming in.

https://www.cdc.gov/norovirus/about/prevention.html

The CDC’s suggestions for norovirus will also work against coronavirus.