There are a lot of people who are still very nervous about catching Covid, we are just back from a 5 week trip round Canada including 7 nights onboard Eclipse late May/early June and we saw plenty in masks and had to wear them on Canadian trains and flights.
Seems to be any building or service that is government owned or operated = mask on, the rest is optional, so on return to Vancouver you can walk about the ship, get in lifts, go to restaurants and bars without a mask , walk down the gangway into the cruise terminal where you put a mask on, then exit and take it off.
There is the onboard rule of wearing a mask in the theatre but the way round this is to take a drink in.
The OP may just want perfect peace to write a book or whatever, we don`t know.
Have room service for 7 days but bear in mind the food is prepared and delivered by people.
My first post on here and I`m afraid you`re just not going to get the comfort and re-assurances you are looking for from me, it`s time to get out and live life again, I sat next to a woman in a restaurant in Banff who kept her mask on throughout her visit lifting it slightly to put food in her mouth, she just looked like a person who didn`t want to be there