You'll find under-stall action here, at Orange County's version of the Pacific Design Center in West Hollywood (which has been a famous cruising spot for years). This place has the same type of action as that one. There are hot gay guys around, who check out the design center, get horny seeing other dudes, and go to the men's room to cruise.
Park at the dead end turn around and walk up the road behind the gate. Some guys walk downhill past the gate on the paved road and play down by the grassy lawn. Most action happens after 10:00pm. Often guys park up the street and walk down so there may be guys cruising even if cars are not parked on the dead-end circle.