I've attended the last few years. If you're even remotely interested in enhancing your skill level, attend the seminar. The instructors are fantastic, fellow students are great, wonderful environment, and a LOT of fun! This is hands on learning and doing, not just listening to someone talk, which to me, sets it apart.
One thing I might add. Please don't be intimidated by thinking "My skill level is not high enough for this". There's a wide range of skill levels among the students to be sure, but this is all about learning, and I've never run across a fellow student, or instructor, who didn't feel that way. In fact, I believe the seminar is the perfect place to start for someone just starting out because you haven't learned any "bad" habits. Whatever your skill level, I'm sure you'll learn a ton, and have a great time doing it!
Ed