We are heading over to Walla Walla from the Tacoma area on Saturday late afternoon for a two year old's birthday party on Sunday at 2:00pm. We are wondering whether to stop to spend the night somewhere along the way to dine, play and spend the night or to drive straight thru to Walla Walla arriving late at night? What can we do in Walla Walla Sunday (July 1st) until 2:00pm? Don't want to show up at my grandbabies birthday smelling like a winery. Can you visit wineries without sampling? Is it worth doing that? Can we visit a winery Sunday evening (after 6:00pm)? We plan on leaving on Monday morning for the return trip. We are 2 50+ single females with my 18 year old son. Any advice is appreciated.