We were recently on the Odyssey TA. Prior to the cruise we received several emails about protocols. Below is one of them. I would think that the OP would have received the same for her cruise.
ABOUT YOUR UPCOMING TRAVELS
Dear Guest,
We’re excited to welcome you onboard for our Odyssey of the Seas Transatlantic sailing. Before you head to the cruise terminal, we wanted to clarify our requirements for our sailing.
Since we’re sailing on a Transatlantic itinerary, all guests 5 and older must be fully vaccinated, with the last dose of their primary vaccine regimen received no less than 14 days prior to sailing. Guests between the ages of 1-4 can sail, regardless of their vaccination status.
Additionally, all guests ages 5 and older must provide a negative test result in order to sail.
Thank you for your understanding and cooperation. We look forward to seeing you onboard soon!
Sincerely,
Royal Caribbean International