We are 2 couples(50 years old). 1 from the South of France and 1 couple with youths 19 and 23 years from Paris. 1 is a landscape architect, 2 persons are working in Electronic components and 1 is in Offshore logistics. We are visiting the States to visit a supplier in LA and we use this trip for vacation as well and as an opportunity to do touring with the children. This is our 1st time to San Francisco.