I also thought, logically, that after signing in I would find the information about my booked cruises by clicking on "Booked Guests". WRONG.
The image you posted of the circled letter is the only way to get the information about booked cruises after signing in.
In my case, the circled letter is "T" for my first name. When I click on the "T", I can see my two booked cruises and my correct Azamara Circle number and points. I also find that Azamara knows I have OBC, but the amounts are missing.
Little baby steps.