It was a time-consuming process that involved getting to the visitor's center to get in line for a numbered wristband by 9am (which I did), and then coming back at noon when the box office opened and waiting for your number to be called so that you could get in line for the $20 tickets. I was number 176 out of 250. So, by the time my number came up it was after 1pm. Then we came back to Lincoln Center for the show at 8pm.
But, all of that being said, it was a great performance and I do not regret the time I invested. I had never seen the New York Philharmonic before, and I'm glad that I had the chance to see them so inexpensively. And, the seats that they gave us were excellent.