I've been on two transatlantics - one in Nov21 and April22. April was on the Enchanted. On the April one, our cabin was on Dolphin and 3/4 of it was closed for covid isolation. As far as I can tell there weren't many covid cases on the TA, but it did continue on for 11 more days for about 1500 passengers and lots of covid then. My husband and I are diligent mask wears and hand sanitizers. We went to the theater and Princess Live and always wore masks. Most people did not. My husband is quite outspoken and makes comments when people didn't wear masks on the elevator. Neither of us got covid. I just returned from a 3 day conference in Indianapolis where everyone was vaxed and masked for the conference and I came home with covid. Don't know if I got it before I went (although i haven't been out), or in a restaurant in Indiana, but somewhere I slipped up. I know i was getting a little lacks and wasnt as careful. After 2 cruises and one trip to Chicago with no covid, i was feeling over confident. If you wear your mask all the time in crowds and whenever possible, sanitize your hands, avoid crowds - board late, no rush to get anywhere, no lines, that's the best you can do. There are some tables in the dining room that are verily isolated. Visit the dining room on departure day and ask the maitre'd for one of those tables at a set time each night.