This will be the second 'official' sailing of the Disney Fantasy (outside of the numerous test/staff/media sailings prior, as the Dream showed). So we won't know what's offered until you get on the ship. Reviewing past Navigators certainly help define what is offered. There's obviously more activities offered on these bigger ships than the Magic/Wonder. For instance, the Champagne tasting was new to the Dream because of the introduction of the Pink Champagne Bar.
If any sessions are undersubscribed during the week, they will certainly promote it in the Navigator to get people out.
I recall on my last sailing on the Dream, where there was no published list of these tasting events, and the Cast Member at Guest Services had to manually search on their booking computer and write out each of the events on a piece of paper for me to review.
Essentially Christopher, I want you to enjoy your cruise and not to burden yourself with calling other guests to rally them out for these tastings. I feel this is something people here can assuredly handle.