We're planning on attending a wedding in the Redlands, San Bernardino area of California in July. We're flying from the east coast with our kids who will be 15 months and just about to turn 4 at the time of the trip. Since its a big trip we were thinking of adding a few days but we're not sure what we should consider doing in that area with the ages of our kids. We plan on flying in and out of LAX and getting a rental car.