I go to Pismo every few months, just Never on Holidays, or on weekends during the summer.
I used to camp there all the time, but its a miserable experience 80% of the time - even when we would bring our travel trailer. The wind usually whips up fiercely in the evening, meaning everyone just hunkered in the trailer or tent the whole time. Then no sleep at night with the quads and shit running through the campsites all night. Its OK sometimes, but not most of the time IMHO.
Now, we just get a hotel room in town, wheel the dunes when we want, Eat at a nice restaurant, go get shit-faced and make fools of ourselves over at Harry's bar to the live music, then stagger back to a nice soft quiet bed. The wife enjoys Pismo 150% more when we do it like this. My wife begs to go to Pismo now.
Pismo is a weird place; quite a mix of Hippies, Red-necks, off-roaders, burn-outs, homeys, cowboys, filthy rich and homeless. You'll fit in no matter what
Oh, and Jocko's rocks! Took some friends from England there last year and thats all they talk about. They asked "what is tri-tip?", and at that moment I knew for sure that the USA is 100 times better than England.