FYI - We never got standing room, HOWEVER, when I went to the box office just before 6pm and asked if they were selling standing room tickets, the man working (who was insanely nice, btw) said no, but that they had $52 seats. I hadn't seen anywhere that this was something they do... they weren't partial view or anything. Row H, 138 and 140. Great seats. So we took those.
I did see people in standing room spots once the show started, so they definitely sold them sometime between 6pm and 8pm.
It was incredible, by the way. So glad I finally got to see it.