By Daniel Kline The biggest cruise ship in the world started sailing during the pandemic and a lot has changed since those days. Royal Caribbean (RCL) – Get Royal Caribbean Group Report returned to service from the United States on July 2, 2021, with Freedom of the Seas sailing out of Miami. It was a celebratory trip, but with under 1,000 people on board and social distancing in place indoors as well as a mix of masked and unmasked venues, it was also clearly not normal. Over the next nine months, protocol changes happened a lot. Mask rules loosened for vaccinated passengers, then they tighten…