We chose your hop on and off bus tour on the web for the convenience of the added Park Ranger tour of Golden Gate Bridge. Good idea. However, it was NOT convenient to have to go to your office to get that ticket. Compared to some other bus companies we felt that yours did not come as often AND since your next to last return bus (around 5:00pm) from the Bridge to Union Sq had no inside capacity many of us FROZE in the September chill. One of the bus guides was good (about neighborhoods and movie connections)and funny and one hard to understand (I am an American/ native speaker of English)--neither had any historical/architectural knowledge. The Bridge was great. Peg, Tokyo