I'm not sure what information you would like. One point I could make is that driving up the coast from Santa Barbara to Carmel will be a long and tiring drive. If they take Highway 1 through Big Sur, the road is a two lane winding road that is slow going. If they are driving from Santa Barbara to Carmel on the 5th and flying home on the 6th, they will not have a chance to see anything in Carmel or the Monterey Peninsula, as the drive will take them pretty much all day.