I rushed this past Sunday (11/4), got there at 11:50 and was about #15 in line. Rush tickets were still available for both shows even though the matinee was a lot more popular. I got one ticket for the evening show - orchestra last row center P105. Enjoyable show, and the view was great!
Last Wednesday I was able to get a rush ticket just before 11 for the night show, pretty good seat in front mezzanine. But recently it seems like the show has been discounted at TKTS pretty frequently too.