We will be heading to San Fran/Monterey/Yosemite soon & I have a question. How well can we tour the highlights of San Francisco by the MUNI transportation only? (We purchased the Alcatraz/City Pass for DH, DD11, DS8, & myself.) We definitely want to walk/bike across the Golden Gate bridge, spend time in Golden Gate Park, and see all the typical "touristy" highlights of San Francisco. Are we going to have to break down & pay for a tour? We are hoping to save $$ in this area since the MUNI/cable cars are already paid for. TIA!!