Both wine tasting and cooking demonstrations are well attended on most of the cruises I have been on. The wine tastings feature wines that are on the wine list, and for the occasional wine drinker, like myself, the sampling provides a chance to find a wine I might like with dinner. We have seen a number of cooking demonstrations, on Celebrity ships, that take place in the centrum or on deck and draw large crowds of interested passengers. Given a chance to see your chef in action seems to add something to the experience. We particularly enjoy longer cruises with a number of sea days, where there are more of these activities. With Celebrity's expanded guest celebrity program there may be real interest in expanding the food and wine lecture choices.
Peter