Your middle paragraph made me smile as it reminds me of the first (& last time) I took my older sister to a Northern Soul do.
It was early on in the night, & no one was dancing, then this one girl gets up & dances. My sister nudges me, & says "ooh look at her, she doesn't half love herself, dancing there on her own, look at her" (the girl didn't love herself as it happens, she was simply dancing to the music) I almost wet myself laughing, & explained to my sister that Soul folk do dance on their own (granted, I wouldn't have taken to that empty dancefloor like she did, but that's only cos I'm a shxt dancer lol)
Regards
Ali