The annual celebration of Mexican independence is upon us, and San Antonio’s bars and restaurants are gearing up to commemorate Cinco de Mayo in a big way. Whether you’re looking for live music, drink specials or new twists on margaritas, here are eight options for a May 5 outing. Costa Pacifica’s May 5 deals include $8 jumbo margaritas, $5 tequila shots from three sponsors and tequila flights.