I love seeing old arcade house rule signs like that. Mine back in the 90s had a unwritten "no throwing" rule. Looking back it was pretty dumb but I remember there were several fistfights that broke out and why most that went to the arcade adhered to it. Once some of the larger tournaments started popping up in the area, most realized it was an important part of the games and adapted and got better, and those that didn't like it stopped going. We didn't have many KOF games but I know house bannings for rugal in mexico were a standard.