Explore the city’s vast network of craft brewers without risking a pesky DUI as the San Francisco Brewers Guild gives you a lift from pub to pub. This weekend’s event delves into the SOMA scene, kicking off at Black Hammer Brewing before embarking via shuttle to a few more neighborhood faves, including ThirstyBear and 21st Amendment. The shuttle is free and makes 10-minute loops between 7 p.m. and 11:35 p.m. No need for reservations, just hop on and off at any destination.