I can say I've played at the prestigious Dorothy Chandler Pavillion at the Music Center in downtown L.A.
Well, me and ~300 other ukers who were part of the Ukule-Along, but still... I can say I played there.
I just started playing on my back patio recently. I had an old heavy duty music stand that's pretty beat up already that I dug out of the storeroom and cleaned up.
Wish I'd done it sooner. It's really pleasant to sit out there, and the natural light makes it easier to read music.
So far, I haven't had any complaints, and I really don't expect any. I mostly fingerpick and it's not that loud (no singing). No competition with the neighbors who blast their music or the guy with the really loud motorcycle. Or the chainsaws from the next door neighbors having their trees trimmed today.