You basically get on the 91 east to the 15 south
If you opt to drive east, there are a set of Indian Casinos at the edge of the San Diego/Riverside County line. Just to clarify, Oceans 11 Casino is actually a card room, and does not have any sort of slot machines, so basically a place to play poker and blackjack., right off Interstate 5 when you get to Oceanside (after a long drive through Camp Pendleton where it is pretty much nothing.