While health officials in Canada and many other countries consider mixing vaccines acceptable to get as many people fully immunized as quickly as possible, it may disqualify you from a cruise. Several lines have suddenly added wording to their fine print saying that having two shots of different types of vaccines does not qualify for sailing on ships designated for vaccinated travellers only.
It’s spelled out specifically on the websites of Holland America Line and Princess Cruises: “Guests who have received one single dose of a vector vaccine (e.g. AstraZeneca) and one single dose of a mRNA vaccine (e.g. Pfizer/BioNTech, Moderna) will not be considered fully vaccinated. Guests who have received two single doses of mixed vaccines that are the same type (e.g., mRNA) will be considered fully vaccinated and will be permitted to sail.” Carnival Cruise Line has added a similar requirement.
Norwegian Cruise Line, which is part of the same family as Oceania Cruises and Regent Seven Seas is even more rigid: “Mixed vaccination protocol will not be accepted (i.e. Pfizer + Moderna or AstraZeneca + Pfizer, etc).”
Read it all in The Cruisington Times.