While it's not my favorite place, I think this is a good venue. It's the spot of my very first big concert (New Order 1989). Since then, I've seen some fantastic shows here - Beastie Boys, Circle Jerks, Violent Femmes, REM, etc... I've even been back stage here hanging out with some of the bands.
I have good memories here, so I have no reason to fault it. The parking, the ants, the vendors, the security... I don't remember any of that. I just remember good times... I just remember the music. That's the way it should be. I do remember that they have good sound and the grounds are typically kept fairly nice.
The last time I was there was 5 to 8 years ago, so perhaps things have changed. I imagine it's pretty much the same.