Not big at all! I'm only 5'2.5" and felt cramped.
The seats were terrible, I was cramping up before the show was over.
Unfortunately you will not fit in the seats, but they may have a 'bench' type seat in the handicap section, you can call them and they can tell you.
They are standard size seats; if that helps. I would definitely tell you to stay clear of the balcony seats unless you are in the logue area.
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