In other travel industries:
In a letter to industry leaders Wednesday night, the U.S. Centers for Disease Control and Prevention (CDC) said cruises could resume sailing from U.S. ports in mid-July.
The CDC will require that ships guarantee that at least 98% of crew and 95% of passengers are fully vaccinated. This rule is in keeping with decisions already made by many other countries to require proof of vaccination in order for cruise ships to operate again.