[quote=@Double]
Are duel disks still a thing or are the duels taking place at tables?
[/quote]

Duel disks are a thing, but they aren't common; pretty sure they are only used by the magic duelists. Duel Monsters is a niche hobby in this setting, not an all-consuming juggernaut like the show, so this should just be a regular store tournament with games at tables.