Definitely worth doing, but some disappointment. Pros: Our family visited these 3 sites in one day and would never been able to do so without the tour. The tour guide was informative and educational as we traveled -- definitely a plus. Cons: There was a loss of 1.5 hours waiting for the boat to Alcatraz tour. We went to local aquarium during the wait. We completed the prepaid audio tour of Alcatraz, but were running to catch the boat back afterwards. We missed the boat and waited another 30 minutes for the next one with hopes that we could still catch the bus. The bus was fortunately late, so no problem. Also, Muir Woods, the best part of the trip, was rushed. We made it through the trails in the 1 hour given, but a stop at the bathroom put us last to board the bus. Really, would have liked 2 hours at Muir Woods -- a beautiful destination.