My family of four is visiting SD in August. We were thinking about going to La Jolla sea caves. We are staying in Coronado and are renting a car. Can anyone tell me if this is worth the trip. Sounds like fun, but is it interesting?? If so, should we take the guided tour of the caves or just explore on our own. Also we thought maybe surfing lessons might be a blast for our two sons (14 & 16) Any thoughts are appreciated.