I'm not even a real anime/game geek. /fml
Not even Jpop. I do know a few older animes from my pre-korean drama days. And I used to like Japanese dramas before I decided to ditch it altogether. They're rather unsatisfying somewhat. Nothing like how GTO, Lunch Queen, Pride, Hana Yori Dango or Gokusen used to be.
But I love the costumes and watching people act out vaguely familiar action sequences from animes. The stuff they sell at these things are usually pretty interesting too. The only thing I don't get - The game booths. Like a whole other world entirely.