I went to see the Dead there and it was fantastic. The sound was excellent and they used the beam-forming to have the vocals sound like they were coming from the stage below, while the instruments seemed non-directional. The haptic chairs were killer fun for Drums and Space. The Dead usually do about 10 minutes of improvisational percussion (Drums) and about 10 minutes of sonic exploration (Space). Watching Mickey Hart play the Sphere (seats, visuals reacting to his sounds, and of course the sound itself) was the coolest part.

The visuals were so engaging that I had to look away to avoid motion sickness once or twice. My brain got used to it quickly. Totally worth the trip and fantastic. One complaint was the lack of bathrooms.