There are three airports located in the Bay Area with SFO (San Francisco International Airport) being the closest to the city center.
OAK (Oakland International Airport) is another option that is a bit further from the city center but offers access to additional airlines.
SJC (San Jose International Airport) is located at the south end of San Francisco Bay and is a bit of a hike to the city center. It is only recommended as an option for those who are planning on renting a car for their visit.
Uber, Lyft, and Flywheel (Taxi) are all great options for getting around San Francisco and the Bay Area.
Transportation will be provided from the Fairmont to the ceremony and then to the reception.
For those who wish to use public transit, San Francisco has a bus system, MUNI with an app that you can download for bus routes and purchasing tickets should you wish to use public transportation to explore.