By Tom Bemis Cruise line passengers have gotten a lot of good news recently. As the cruise industry continues to recover from the effects of the covid pandemic, more and more passengers are returning to ships to get a break from their regular routines. To a large extent, the process has gone well, but there have been some frustrating carryovers from the worst of the pandemic. For instance, there has been ongoing confusion over mask rules in different parts of ships depending on the vaccination status of passengers. While that’s largely resolved, until recently the Centers for Disease Control a…