Thanks! Karaoke can work here (in Koreantown). Arcades (you mean video arcades, right?) have kind of disappeared, though there are a couple left. In past years "ciberes" were potentially feasible; those are businesses where you pay by the hour to use an internet-connected PC, similar to a "PC bang". I've done meetups in the park, with or without picnics, but not barbecue. Bars do exist. Any other ideas?
Yeah, gaming arcades. They still exist in Japan and are coming back in the US by attaching things like karaoke and bowling alleys to them. But I think that's more for young people and I suspect all the adult activities involve drinking.
It's pretty culturally specific though, so I'd just check what everyone else is doing with whatever the local versions of Meetup/Foursquare/Google Maps are.
