Sloan Barnett, Zachary Bogue, Charlottle Shultz and Gary Shansby (left to right) sit down to dinner while attending San Francisco Ballet's Cinderella Opening Night Ball in a tent outside War Memorial Opera House in San Francisco, Calif., on Friday, May 3, 2013.  The party celebrated the opening night and United States premiere of choreographer Christopher Wheeldon's production of Cinderella. Photo: Laura Morton, Special To The Chronicle