Might as well add “do not leave your house” to your list.
No, not at all.
A cruise ship is a floating petri dish.
Leaving my house, I have control over how I go, where I go, what I do, how I react to my surroundings, when I return.
To say “avoiding Cruise Ships” = “locking yourself in your house”....
Do I really have to assign an adjective to that reasoning? Or can you figure it out for yourself?