By Daniel Kline All three major cruise lines have found ways to handle whatever the pandemic throws at them. The oceans have been stormy for the major cruise lines that sail out of American ports. Royal Caribbean International (RCL) – Get Royal Caribbean Group Report, Carnival Cruise Lines (CCL) – Get Carnival Corporation Report, and Norwegian Cruise Line (NCLH) – Get Norwegian Cruise Line Holdings Ltd. Report have had to deal with an uncertain world since their covid shutdown in March 2020. All three cruise lines have returned to near-normal operations despite the ongoing pandemic, but that d…