well I am devoted to the book but I went with someone who also read it in school and that was it, and we both loved it. It seems impossible that it will hold up and sustain itself, but somehow it does. Oh and remember that the 8 hours (it's actually a bit more as I recall) includes 2 intermissions not counting the dinner break, so actually roughly an hour and a half less of sitting (though I should mention also that the first act runs over 2 hours nonstop). Go. You only live once.