Wow...so young married women work at karaokes with full consent of their husbands? I've not been to adult karaoke's in Korea much, so not sure it's even what I remember. Are these where it looks like a normal restaurant, out in the open and women come sit next to you on couches and pour you drinks? I have limited experience, but I don't recall any legit action taking place, but I think I was cozying up to the girl next to me, hugging them, hands on the upper ass cheeks, or hands in between their thighs and groping them a bit, breasts rubbing up against me, maybe the girl giving glancing rubs of my cock and thighs. Maybe a tiny bit of kissing, but not much.
I got the impression I could've taken them out either that night or later for a price, but never confirmed it at these particular spots. Are these what you're calling Seol adult karaokes? If so, that's kind of wild that husbands are fine with their young recently married wives getting groped and kissing guys in public.