By Daniel Kline The Royal Caribbean cruise line has slowly been dropping covid protocols, but two major rules remain in place. The recovery has gotten very real for Royal Caribbean International (RCL) – Get Royal Caribbean Group Report. The cruise line has fought its way back from being shut down from U.S. ports for more than a year by the Centers for Disease Control and Prevention to cash-flow-positive on its way to being truly profitable. Royal Caribbean has fought hard to pull off this remarkable turnaround. In July 2021 it returned to sailing from U.S. ports, with early trips carrying very…