i agree with the others: if you stop and ask questions, you get focused, interested answers. there is not a more sharing group of people than were in that room. a "show atmosphere" can make you shy about adding to the demands on someone's good nature, but amazingly enough these folks seem to want to hear you and talk with you. "a cat can look at a king', and actually ask a question at that show. hence my preference for it over the January show, which i find too big and too loud.
like you, i thought there was a slim choice amongst the classes. signed up for deer hair spinning with Dick Talleur, but he was ill that morning. got put into Gary Borger's dubbing loops class. not a choice i would have made on a bet, but...turned out to be life changing. now i know how to easily approach big streamers and how to use "too big" hackle for my favorite wet flies. and he taught the group a quick and dirty sub for spinning deer hair!
fly fishing and baseball share a totally deceptive simplicity; that's why they can both be lifelong pursuits.