If I felt it wasn't safe, I wouldn't be planning to take a cruise next month ...
Everything is a risk. Grahame is, of course, quite right............everything is a risk, but most people don't understand risk anyway. Most people do not accept that they at greater risk of death on the M1 on the way to Luton Airport than on the Airbus (or Boeing 737 even !) flying from there to Ibiza. The blood clots saga with the Astra Zeneca vaccine is another example.

There are much more obvious ways to demonstrate risk reduction on a cruise............(for johnneyw's info this was on the Nile !) Absolutely no one was in the slightest bit concerned about their safety on this trip !