"Greece can experience extreme natural phenomena such as earthquakes, wildfires, extreme heat and flash floods [...] Register for alerts from the Greek government's Emergency Communication Service."
"Sometimes, the cruise lines don't want to report this information on the front end... which brings unfortunate attention to them, just as it would when we have airplane situations or the delays in airplanes that we're having now..."
Most healthy individuals don't need to mask up during travel, although there are still risks. I don't routinely recommend people wear masks on airplanes...
I was surprised the ship left without us because when you're on a cruise-organized shore excursion, it is supposed to wait for you to get back, even if you're running late.