The day tour of the city was very informative, it would be hard to see all the different neighborhoods without the bus tour. The Alcatraz portion was amazing! It's great that you have a reserved time to go out to Alcatraz, but can take any boat back you want, leaving you to decide how much time you want to spend. The night tour was wonderful, tour guide Dave, was absolutely the best.
The Big Bus San Francisco Sightseeing was horrible. The driver blew past almost all the stops not allowing passengers the opportunity to get off the bus. The Alcatraz part of the trip was ok. I would not recommend this tour. Big disappointment.