Yeah, it's fun watching those hardcore DDR types. Last group I saw would take turns beating their own high scores on highest difficulty. They brought towels and water bottles and would even spray the bottoms of their shoes with what I think was glass cleaner to get a better grip on the dance floor. It's fun to look at their stats at the end of the games - incredible how few they miss.
We're lucky enough to be near a Sega GameWorks but they got rid of all the Mushi King machines and their 'classic' collection of machines are always in need of repair. Always fun to play the full size OutRuns with a big group.