This time last year, my wife and I took back to back Princess cruises. First leg was a Norway cruise, followed by a repositioning cruise back to the States. We self-tested for the second leg and were
both negative for Covid. Repositioning cruise started out fine, but on the last port visit, many were
coughing and sneezing on the tour bus. Well, I came down with covid, wife was negative, and I was quarantined in a separate cabin. Yes, keep those masks handy, avoid those crowded elevators (possibly were I got infected).