I tried last Wed. night thinking that w/ the weather and the weeknight that my chances would be pretty good. Out of our group of five, only one person won. But those odds are about right since I think at least 75+ people entered.
There are 18 seats available for the lottery - all in the first row (14 in middle, 4 on each side). So, if each person goes for 2 seats, then only 9 people can win. That's what happened when we tried for it.
Ultimately, my friends enjoyed the show from the front row, but said that they got sprayed by Lithgow spittle during Dirty Rotten number. I guess there are drawbacks to everything!