Short version, cruise 5 days or less, no test required in the USA, but it remains in Canada or Bermuda. 6 Days or more testing still required. If you're traveling with a child, it still seems to be a hassle with them granting a "small number" of exemptions. They say theres clearly more to come, and the implication is it'll be soon.
I would strongly suggest anyone cruising within the next few months stay up to date with their "changes", given that sometimes they need an editor to eliminate confusion. As an example, I actually "clicked the link" which took me to the "full version" of that notification email. If you scan down to the section called TESTING REQUIREMENTS (UPDATED 7/29/22), you will find their explanation of the difference between merely being "fully vaccinated" as opposed to being "up-to-date", and requirements for each. didn't know that did you????seems to me the requirements are EXACTLY THE SAME...test within 3 days...or did I miss something?