I'm going again this year
I can't wait!
I do everything "but" pay to get on the grass at Pebble Beach, to much $$ and you can see most of the cars as they do the tour at 17mile drive, in Carmel.
The historic races at Laguna are a must do, as well as the concorso italiano, then you have the RM auctions, ect, that entire weekend is really something every car guy must do once.
Some travel tips:
Friday I like to go to the Italiano first (half day) then head over to the track and walk the pits, crowds not as big and drivers/owner more willing to chat and show you the cars.
Pick some classes of races you want to watch, grab food and water and park yourself at the corkscrew, it's not exactly a 5 min walk anywhere at that place so plan your races to view ect.
Breakfast at least once at Katy's Place in Carmel, worth it.
Thursday is the Pebble Beach Tour, for the cars.
Ferg