We both wore masks on a January cruise and my husband got it the last night and I didn’t get it. For us it was just cold like - no reason to be tested anymore since they don’t test people for other illnesses that are worse. High risk people probably shouldn’t cruise. We have 4 vaccines in us plus both have had it. There is no reason to quarantine people and I won’t go on any ship that requires one. People who are coughing and sneezing should have to wear one in public areas regardless of what the illness is. It’s just respectful.