We'd like to plan a trip to Napa Valley and want to know about harvest time. Are there limited openings at the wineries during harvest time? What is a good time to go - maybe just after harvest? When is it most crowded? We were there in July 2008 and it was gloriously uncrowded, but we would like to plan more in September. Should we plan on early or late in the month. Thank you. 3 pp Husband, wife, grown son.