Hollywood Bowl info?

Hey hey, I'm looking at doing LA but I've never been to the Hollywood Bowl. What's the scene like? Are there bad seats? Is it possible to move up from far away seats? Is there a pit and how big compared to say the Gorge? Does it sell out and become an impossible ticket (at least at face) to get if the lottery doesn’t come through? I'm a vet of the ticket dance and CashorTrade and all that, just haven't done this venue before. Thanks y'all!