I do. Around here (pre-covid Northern Colorado) a lot of the audience do/did. Way more than at ballgames. And yes, I smile when someone shouts "play ball."
Its sad that the music people don't want to play it any more. Cretins, even Gaga sang it.
My favorite gigs since I moved to Pot-orado have always been the summer park gigs, I used to be able to do tons of them 2 or three a week at least all summer long and I miss them. I so hope to be able to get out soon there is something special about playing the SSB straight from a band shell and seeing dozens of rest home seniors haul themselves up to standing and singing that National Anthem. But the one that always makes me weep is looking out over the crowd while playing America The Beautiful