There are an almost too many things to do in CA. If I were driving from DL area to SF area I would spend a night in Monteray and vist the aquarium. It is fantastic. The LA Zoo is actually very nice, San Deigo is all anyone ever talks about but the LA Zoo is a nice zoo. I highly recomend the JP Getty. Even if you are not an art museum kind of family, this is so much more than an art museum. Both JP Getty museums are fantastic, the villa must be open by now??? If you are an art museum kind of family the Huntington Gardens and Library (which is inland, not at the beach) is well worth seeing. They have an outstanding collection and beautiful grounds. Oh and while you are in So Cal think about a day at Knott's Berry Farms. It is a great theme park, we never miss it. Check at a Von's (local grocery store) to see if they have discount tickets. You need to sign up for a 'Von's card' but it is free and you can buy the tickets on the spot so you can use a fake address if you want to. Of course there are the beaches. I lived in Huntington Beach so it never seemed that special to me, but now that am land locked I realize that it is a pretty neat beach. I am also very fond of Laguna beach. Oh and have you ever heard of Trader Joe's? Do the have those by you? If not, and this sounds kind of crazy, but I never miss a chance to visit one. It is a grocery store. Yes, I amtelling you about another grocery sture. I go for the wine. Locals call it two buck chuck, best two dollars you will ever spend (so long as you like wine). There is a great story behind it too. Other random thoughts... I love Santa Cruz, and many of the other small costal towns between LA and SF, you really miss the charm of CA if all you see are Orange County and San Francisco.
I'll be in SoCal just ahead of you. Alas, aside from our 3 days in Disney we are tied up visiting old friends and old people who are related to us. We might make it to Knotts and I will try my best to get to the Getty. I am also off for a quick trip for the start of the big celebration (my Mother's Day gift) so I will try to post a quick trip report. We are only doing the land not DCA this time around.