I did the galley/brunch on the AOS and Serenade and had a great time both times. Maybe because it was a smaller ship, the tour was at least 1/2 hour- we stopped and talked to the different stations, asking questions etc. I agree that the brunch itself was not extraordinary- it was good. Had a few mimosas and met wonderful, interesting people. I think the staff/guide can really make a difference- if they're into it and upbeat the experience can be worthwhile.