There is parking available at Fort Mason, however we always suggest using public transportation or taxis.
Public Transportation: The Muni Lines 12, 22, 28, 30, 43, 49 all get you close to Fort Mason.
— For more information and Muni routes please click here: http://www.sfmta.com/cms/mroutes/tripplan.htm
Also check out ridesharing programs unique to San Francisco.
Download : SideCar app on your phone!!! 
Use the Sidecar App for Transportation at Wintersalt
Walking to Fort Mason, Festival Pavilion: You can walk from Lombard & Laguna, and enter the gates where Laguna meets Marina Blvd. Follow signs to the Festival Pavilion. Please be respectful of the Fort Mason Center campus. Thanks!
Note: if you are coming from the Fisherman’s Wharf area you may walk around the back way that follow the waters edge. Please use Google maps or GPS to help navigate!