Wow- you guys are truly nerds, aren't you? But that's okay- I consider myself a nerd and am very proud of it. Nerds unite!
You see, The Rule is: Never start or be in a conga line at a rave, even if it is a diet rave. It's tacky. However, if anime con goers are doing it, I suppose it's understandable and quite fun.
I was at Sakuracon, and yes, there was a conga line. There were also a bunch of very interesting (aka, entertainingly bad) dancers there. It's okay though- the people who can't dance are the ones who make the raves twice as much fun. Keep doing what you're doing- I enjoy watching all of you.