My opinion of this trip is that it is a good trip if you are wanting to see giant redwoods, those that are hundreds of years old, but are NOT the ones that get big enough to drive a car through, it is wonderful. I was lead to believe that I would see the "Giant Redwoods". These are a species of redwoods, but not what I wanted to see. The trip is informative, amazing and something that all should see, but don't get misled into believing that the redwoods you will see are the "GIANT" redwoods.
Yes, they are tall, yes, they are impressive, but make sure first what you are buying.
The Guide was great, the trip was everything else that they said, went to Sausalito, took the Ferry and enjoyed it very much. Did not go to Alcatraz.