In 1981 Carl Wilson played the Agora here in Atlanta. I stayed till the end, he started packing stuff up. I asked him, "When was the last time you packed your on gear up"? he laughed and said "It's been a long time"!
LOVE that story! Thanks for sharing. Fascinating.
By packing up, you mean he was putting his guitar and cables back in their cases, and moving amps offstage? Or was this a backlined show with house amps/drum kit? (Not expecting you to remember, being so many years, but just the story you already shared was super cool).
I tend to think that for smaller, oddball one-off gigs, like when they would play small sets at hospitals, or early solo shows like this where it was not an actual Beach Boys show, they may have done some of this type of thing on their own.