From the Cruise Lines International Association:
“Due to the ongoing situation within the U.S. related to COVID-19, CLIA member cruise lines have decided to voluntarily extend the period of suspended passenger operations. The current No Sail Order issued by the U.S. Centers for Disease Control and Prevention (CDC) will expire on 24 July, and although we had hoped that cruise activity could resume as soon as possible after that date, it is increasingly clear that more time will be needed to resolve barriers to resumption in the United States.
“Although we are confident that future cruises will be healthy and safe, and will fully reflect the latest protective measures, we also feel that it is appropriate to err on the side of caution to help ensure the best interests of our passengers and crewmembers. We have therefore decided to further extend our suspension of operations from U.S. ports until 15 September. The additional time will also allow us to consult with the CDC on measures that will be appropriate for the eventual resumption of cruise operations.”
The association includes all cruise lines you’ve heard of.