I got there at 5:30pm. The guy there before me was there since 3:30pm. By 6:00pm, there were only five people in line.
This box office guy was SO NICE. I got up to the window, and he said, "OK, let me find you the best seat I can, hold on."
It appears that by two hours before the show, the full price and premium seats have just been released for discount sale (the discount code seats in advance are only far side Orchestra and side Mezzanine), so all the good seats are what's available at that point, and they sell the best available for rush.
They do sell a window card, and it's gorgeous. I didn't check the price, though.
The show was pretty great. I would advise waiting until later in previews if you want to see it in tip top shape. The pacing was a bit slow, and Lansbury was having trouble with her lines and projecting. But it was an enjoyable night.
"Winning a Tony this year is like winning Best Attendance in third grade: no one will care but the winner and their mom."
-Kad
"I have also met him in person, and I find him to be quite funny actually. Arrogant and often misinformed, but still funny."
-bjh2114 (on Michael Riedel)