Enjoyed the Alcatraz audio tour, but directions from big bus were incorrect for picking up Alcatraz tickets. Instructions were to pick up day before or before 9:00 am tour on Saturday, we made a special trip Friday night to get tickets but we're told we couldn't get tickets until Saturday and the tour was at 3:30 not 9:00, so we had to reschedule our whole day. We did take the China town walking tour from Big Bus and it was very informative, I would highly recommend it. Saturday night we did the Big Bus night tour of the city it was chilly but beautiful and interesting. We were unable to squeeze in any of the other Big Bus tours because of scheduling error.