I was there for two days. Took in lots of the seminars, talked to the "professional" tyers, cast rods and walked around a lot.
I really wasn't impressed with the attitude of the professional tyers. They just seemed to be more interested in selling a fly for $2 than teaching something to someone. Maybe I missed the mark, but most of them didn't even want to talk to you.
What I enjoyed the most, and it was well worth the two day admission was learning spey casting from the FFF folks from Virginia. It was absolutely free and they were so happy to teach you something new! If you had problems with tailing loops, one of their FFF certified instructors would work with you. I watched them show numerous kids how to cast and tie flies - kudos to them.
Most fun was sitting in the lobby talking to Ed Shenk. We talked fish, flies, and swapped lies. I asked him what was the one thing he hated the most about modern fly fishing and he said....oh, he swore me to secrecy on that one. You're secret is still safe, Ed.