Which wineries in Dry Creek Valley have outdoor seating?
Spill lists 36 wineries in Dry Creek Valley that confirm outdoor seating. Walk-ins are welcome at 6 of them, and 25 ask for a reservation. A typical tasting is $30. The winery itself maintains the facts on one of these pages.
Is outdoor seating at Dry Creek Valley 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.