By Daniel Kline The Royal Caribbean cruise line has gone back to a policy it used during the early part of its pandemic-era return to sailing. Few, if any cruise passengers miss wearing masks and dealing with ever-changing rules on exactly what was required of them in different parts of the ships they were on. People generally also appreciate not having to take covid tests before their cruises because the effort made taking the trips that much more complex. In addition, while cruise passengers likely have mixed feelings about vaccine requirements being dropped, that change has certainly been a…