On U.S. rivers, two cruise lines aim to have their boats --
all with less than 250 passengers and crew -- sailing by early this
summer. American Cruise Lines aims to return June 20, 2020
on the Columbia and Snake rivers in the Pacific Northwest, with
American Song and on the Mississippi River on American Harmony, leaving
June 28 from Memphis. American Queen Steamboat Company has also set a return date for the Columbia and Snake rivers, as well as the Mississippi River, in July.
American Cruise Lines Aims to Be First to Resume River Cruising in United States https://www.cruisecritic.com/news/5361/
In the U.S., American Cruise Lines
is voluntarily reducing the number of people on its ships, as well as
allowing more time between cruises for sanitation. Dining changes have
been made, with tables capped at a maximum of four and only being used
once per night. Public washrooms will be closed, and people who have
traveled internationally within 14 days will be denied boarding. (The
size of ACL's ships -- all under 250 combined passengers and crew --
means they are not subject to CDC requirements under the current ban.)
https://www.cruisecritic.com/articles.cfm?ID=5822