At least Long Shadows winery in Walla Walla has them inside!
I think "Pricey" is quite the understatement and yes, they are mostly outside, some are in a building, but the vast majority were outside. And I had exactly the same thought, while looking at them, Missouri has been known to see hail and the Garden Area must have had a terrible wind storm recently, there were limbs cut up and down all over the grounds.