Interestingly, Harrah's Rincon, only a few miles further north only lightly links itself to San Diego (occasionally labelling itself as 'San Diego North'), and the Pala Casino Spa Resort, only a few miles further up than Rincon, doesn't really mention San Diego at all.
This area is northeast of Escondido, so I'm not sure I'd consider it part of the San Diego area, but the casino considers itself part of San Diego. Not extremely easy to get there, since you have to drive the winding mountain roads, but once there, easy to spot and park. Tucked away on the winding mountain roads of Valley Center, Valley View stands out as a large sprawling structure perched on the side of the mountain.
All-electronic poker room at the Valley View