My personal issue with the cruise testing mandate is with the current policy of mandated testing "72 hours before embarkation." The overall theme/question is "Why Test?" I interpret that policy (not just with cruises) is an entity testing just to say that they test, NOT to actually/truly not spread COVID. Does testing once better than none at all? One could argue, yes. However, my issue is that what are people doing once they get a negative test? Personally, I'm doing my 72hr test tomorrow, then getting on 12 hours of flights the next day.
For those who are in the camp that testing is an actual must, do you trust that all those people are truly negative when they enter the ship? I DEFINITELY DON'T WANT THIS, but the only way to truly get anything out of testing is to test daily, 72 hours before and everyday after that until you disembark. Otherwise, what if someone brings it in from an excursion on day 3 and still have 14+ days to go? Obviously, nothing is 100% but only performing one test is "checking a box," not actually searching for live positives.