MaxBuck

Our cruise (Lisbon to Barcelona via Canary Islands, etc.) had, I believe, 8 cases. So far as I know, none were serious enough to require hospitalization.

It's not true that KN95 masks are necessarily less effective than N95s. I personally don't find KN95s to be as comfortable as N95s. But that's a very individual thing.

If you've recently recovered from COVID, make sure you use an antigen test rather than PCR. If you're no longer contagious, antigen test will confirm that. PCR may indicate positive for an extended period post-recovery.

Just completed a Regent cruise where masks were required. But none were required while dining or drinking, in outdoor areas, or when working out. A total of 8 confirmed COVID cases during the cruise, but no serious outcomes. I really don't understand the overreaction to mask mandate. I don't like wearing them myself, but in practical terms you really don't need to wear them very often while on the boat.