I've been to Knotts on a couple of days this spring when I was able to see some sets by the Hillbillies. They seem to be having fun, although probably missing that wireless audio setup. The crowds I've seen ranged from 60% or so to nearly full. One big plus is a completely different set every show of the day with no songs repeated in my experience. They snuck in the Grateful Dead's "Friend of the Devil" during the last show at DL, but here they can play it openly. It's darker in the Bird Cage than the 'Shoe,but here are a few views starting with Elvis doing his patented pull the undies from my cheeks move.
The Beatles Medley
The Devil Went Down To Georgia.
Y'all come back now, ya hear?