Which wineries in Spring Mountain District have outdoor seating?
Spill lists 5 wineries in Spring Mountain District that confirm outdoor seating. Reservations are required at 5 of them. A typical tasting is $125.
Is outdoor seating at Spring Mountain District 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.