[ The fighting rings are definitely an open secret of sorts, especially among the Displaced, but it's not so surprising that Jónsson hasn't heard of them yet. ]

Well, it's not legal, but they're exactly what they sound like. The location tends to move around for that reason, so you need to have an ear to the ground or at least get on the right lists to stay in the know.

[ He's making his way through his drink with little trouble, especially given the time of day. Alcohol doesn't do much to Jack, so he doesn't have to worry about how it might affect him. ]

You can either participate in the fights yourself or bet on them. Or both. But it can be good money if you play your cards right.