Empire_of_Liberty wrote: “To me, this is the kicker. And, No - requiring vaccination is not a measure. There exists plenty of evidence, already that vaccination is no proof against infection.”
Requiring vaccinations is the best measure. The vaccines are 95% effective. Requiring 100% proof against infection is absurd.
I don’t know about “absurd”, but I don’t think the cruise industry is going to want to just accept low odds. They would certainly be taking a gamble that you know what you are talking about.
The Diamond Princess strikes me as a particular disaster for the industry. There was no provision to get the uninfected off of the ship, and I believe the end result was worse than it had to be.
Your vaccine is not the only, or even best, solution. It might be legal cover, but that is not going to restore customer confidence, if the worst happens. Other measures could improve the situation, I might think dramatically, and whether passengers are vaccinated or not.