I'm a Calif trial watcher, and I hate to say this, but even if you don't get in--the hall is darn interesting esp during breaks, you'll be out there with witnesses waiting, hear the lawyer and media dish and hallway interviews. And the fights ! So, on a day I was interested in, I'd go even if it looked like I wouldn't get in. YOu can hang out around Beth and the media. EVERY PART of it is interesting, but I'm a nut. Plus you never know, sometimes if someone leaves, a hallway person gets their seat. The hallway during Spector (I didn't get in a few times) was righteous.
edit: during Spector and Peterson. You really get a load of the families in the hallway. Sat with Anna Nicole's mother too in the hallway and had a sweet visit. No one was nice to her but us.