What? You haven’t checked out the vast, glass Craneway Pavilion on the Richmond waterfront? This Sunday, July 3 would be an opportune time to see its conversion from a WW2 truck plant to a kind of crystal palace entertainment venue. The Oakland Symphony Youth Orchestra, then the Oakland Symphony itself conducted by Michael Morgan, will salute Independence Day with a free concert of Sousa, movie music and sing-a-longs. The night is capped off with a fireworks show over the Bay. Doors open at 6:30. Food is available as well as an “instrument petting zoo”, whatever that is.