By Daniel Kline The two cruise lines have had to adapt to changing market conditions caused by the pandemic. Royal Caribbean International (RCL) – Get Royal Caribbean Group Report and Carnival Cruise Lines have remained nimble during the pandemic. Once both companies returned to sailing in July 2021 after being shut down in North America for more than a year, they realized that market conditions would change regularly. That led to both companies stepping up their communications with customers as covid protocols and itineraries were ever-changing. When a customer booked a cruise, they did so kn…