Cruise News Today — March 20, 2022. The CDC relaxes protocols for cruise ships that are operating under their programs. In line with Carnival Corporation’s long cruise policy, Carnival Spirit guests will be required to get a booster shot for their 16-night Panama Canal sailing. The Micky and Madeleine Arison Family Foundation have pledged 3 million dollars to organizations providing aid to Ukrainian refugees. Cruise line stocks were down on Friday for CCL, RCL, and NCLH.