Just a tip -- I saw it last week and got a "partially obstructed view" seat, which I'm 99% sure was Q 109 (I'm writing from an amtrak train, don't have my ticket stub with me). It was the last row in the Orchestra section, the seat right next to the sound board, and I paid $79. The man next to me paid $140. If I leaned forward I could see the entire stage, and if I sat normally about 1/4 of the stage (left side) was obscured. Since there was no one behind me I could lean forward if I wanted to -- it was only necessary a couple of times. The man next to me did tell me when I missed something (a dance move by one of the actors as he left the stage) --
The sound was great, so I'd recommend this seat if you are on a budget and don't mind leaning in once in a while. During intermission I made a video of my seatmate eating the "Waitress" pie he bought during intermission (of course I asked him if it was OK) -- he's a schoolteacher from out of town and I sent it to him so he could share it with his students. I also made one without including his name -- he loved the show -- and the pie. It's a little steep at $10 for such a small portion, but the jar and spoon are nice souvenirs to have, especially for someone from out of town.
https://vimeo.com/163499612
I'm rooting for this show -- love all of it, including the "turn off your cellphone" song at the top.