I recently got my hands on a copy of the script and finally got around to reading it (doing it in scene-by-scene incriments, to have the "fun" as long as possible).
I've gotten so much more out of the script itself than I was able to at the theater. In a way, it's poetry. Bizarre, demented, hilarious, dirty poetry.
It's like a musical without songs...Diane punctuates each scene with her interjections to the audience (even though half the time they're to invisible character), her last line of each segment being a kind of "button."
Before anyone PMs me for copies, the script is readily available through Dramatists Play Service.