We went April 2010, booked direct with Virgin. Started in San Fran then drove along the coast making lots of stops on the way, one being at Anahiem to Visit Disneyland. We stayed at the Hyatt Regency OC, lovely hotel not far from Disney.Four day pass was enough for us, manged to fit everything in that we wanted. Enjoyed both parks. Plaza inn really nice character buffet much like Crystal Palace theme, great interaction with characters and great food. Storytellers breakfast at the Grand Californian is also really nice.
Indiana ride in Adventure Land is nothing like the Indiana ride in any of the other parks, which I don't like. The Indiana Jones at Disneyland is Amazing, love it.
Paradise Pier was our favourite part of California Adventure park, really different to any other Disney Park, lots of different attractions, a different feel to it.