One of the times I was doing it and won it was a Thursday night. I was asking how crowded it usually gets and the person running it said it is like a cycle. She said that it starts off quite at the beginning of the week usually around the Sunday evening performance and picks up towards the end as it gets closer to the weekend. So, I think that if you were going to see a Tuesday performance, it might not be as crowded as let's say the lotto for the Saturday evening performance.
"If you try to shag my husband while I am still alive, I will shove the art of motorcycle maintenance up your rancid little Cu**. That's a good dear"
Tom Stoppard's Rock N Roll
"Insane" is the Wicked lottery. n2n hasn't come close to that level.
That said, I've never been there where everyone won. But I have been there once when they had to go through a lot of "I don't need them" responses to fill the last few seats.