It looks like a pretty complex process and there will need to be trial cruises with volunteers who aren't paid or promised a future reward. Someone on FB questioned why the airlines didn't have to go through such a process and someone answered that airlines are "Tier 1" transportation. I couldn't find any backup information on the "tiers" of transportation.
"Cruising could restart in midsummer in American waters, the Centers for Disease Control and Prevention said late Wednesday in a letter to the cruise industry that USA TODAY obtained.
"We acknowledge that cruising will never be a zero-risk activity and that the goal of the CSO’s phased approach is to resume passenger operations in a way that mitigates the risk of COVID-19 transmission onboard cruise ships and across port communities," wrote Aimee Treffiletti, head of the Maritime Unit for CDC’s COVID-19 response within its Global Mitigation Task Force. ."
I'm glad the industry is being given a chance but I'm hoping Vancouver and Victoria won't allow cruise ships to dock until all this mess is over.