The tour was excellent. Our bus driver, Troy, was very knowledgable and entertaining. Alcatraz is very interesting and I would certainly recommend a visit. Muir woods was a little disappointing as you have to stick to the trails and are not allowed to 'roam' but I can understand they need to do this for the conservation of the trees and wildlife. We only had time for lunch in Sausalito but I would recommend 'Napa burger company' whose burgers were great. There are also a few nice shops in Sausalito but the stop there isn't very long. All in all I would definitely recommend Viator and the Alcatraz tour and would certainly use the company again.