Here's what you're missing if you haven't been:
This was Tuesday night (July 24, 2018) around 8:15 or so. Moon rising behind us, still plenty of light out. A program of Sibelius followed by Ravel's Bolero. Beautiful evening, and the Park & Ride makes it so easy.
I blogged about the Hollywood Bowl Museum once,
The Bowl has it's own history up on its website, from its days as Bolton Canyon/Daisy Dell to the days of the sonotubes, then big balls on top, the Jazz Festivals, jumbotrons, and all up to the current 21st century singalongs. Lots of pictures.