Yeah I was thinking of Canadian folks when I read the email. A good what, 1/3 of Canada has a mix of AZ as their 1st shot and then the 2nd mRNA? They're basically alienating millions of Canadians with this (current) guideline.
Same with Europe (UK in particular).. And Latin America? They're basically banned from cruising for the time being as most ppl there were/are vaccinated with Sputnik and/or Sinopharm (may god help them). But tbf there's only a handful of passengers from Latin America on any given cruise.
I hope DCL amends this soon, as you say... because Canadians comprise at least 10% of DCL passengers especially during summer & Xmas/Spring break...