Looks like this board hasn't been active in a while, but I thought I'd provide another data point before the show closes in a couple of days.
I won the lottery for today's (Wednesday) matinee (only entered for a single ticket) and was placed in the center section of the back orchestra (second to last row), three seats in from the right aisle. Wonderful seat -- could pretty much see and hear everything.
Given others' experience on this thread, however, it looks like I may have just gotten really lucky. At least one person next to me confirmed that her ticket wasn't a lottery seat.
On a semi-related note: If you haven't seen this show yet, DO IT. It was far better than I expected (and I had high expectations), and the performances were phenomenal (especially those from Reed Birney and Jayne Houdyshell). I almost wish I could see it again to catch all that I missed.