I for one can't wait for this!
I'm a total Dream Theater newbie and this will be my first time seeing them live, which has me even more psyched.
We're sitting in the last row of the covered section of the pavilion on the left (the exact section and seat number escapes me at the moment - I could go grab my tickets from the other room but am too lazy), but I'm sure in a venue like this there's not a truly "bad" seat in the house. I've heard it's a great place, and not that big of a place, although I've never personally been there.