Cant help you regarding the rush lately, but I wanted to give you some help!
I rushed the show the 2nd week of January, and arrived at the theatre at 8:30 AM. I was the second person in line, but by 9 oclock or so there were maybe 20 people in line. When the box office opened at 10 there were certainly more than enough people in line to fill the 26 seats (I rushed a Saturday; so 13 spots for the matinee and 13 for the evening).
I know this doesnt totally help you, but as I said before I wanted to be some form of help to you. Best of luck and I hope you enjoy the show!
I'll take the wind and soar.