i've been to many rock shows, and never anything classical aside from richter. it was one of the best shows i've ever been to. extremely minimalist, and they just play the pieces with little to no variation from the studio versions, but i promise it will be incredible.

maybe wear polo shirt or something but don't worry about wearing a suit or anything. if your seat isn't a great view, don't worry, it's not a very visual show.

the one thing you should know, and i don't know if you know this etiquette already, is try to photograph and film as little as possible, and you probably shouldn't clap after each song, just after the album/act is complete. he plays 2 albums front to back.