The venue itself is actually pretty great. We had lawn seats and had plenty of room and could see fairly well. The screens are under the pavilion and we were in the back of the lawn so didn't see those very well. Concession options were plentiful too.
But, let's talk parking. First - be prepared to walk and walk and then walk some more. Which wouldn't be too bad but there aren't a ton of landmarks so note your lot at least. Even then it is a challenge to find your car so you get to walk a whole lot more and this time with many drunk people.
Getting out of parking at the end of the concert? Impossible. There were multiple parking attendants but none of them directing traffic in our lot. A fight broke out. There is no direction. We sat for an hour and a half before we even moved more than a couple inches. I know it seems as though I'm exaggerating but I promise I am not. This situation will prevent me from ever going to Blossom center again.