Which wineries in Yountville have outdoor seating?
Spill lists 12 wineries in Yountville that confirm outdoor seating. Walk-ins are welcome at 3 of them, and 9 ask for a reservation. A typical tasting is $50.
Is outdoor seating at Yountville wineries first come, first served?
It depends on the winery. Many seat outdoors by reservation like any other tasting, and a few keep the patio for walk-ins. The winery's page says which, and weather can close a patio on the day.