Check the concert start times before booking. The SF Bus listed ‘Doors open” times are actually the concert start times. I checked an upcoming concert at Levi Stadium the bus leaves SF at 5:30 pm and they list the show time at 7:00 pm, however per my ticket and Ticketmaster the show actually starts at 6:00 pm. gates open at 5:00 pm. It is not a big deal if you do not mind missing the first two opening acts.