Hell, let them have their fun on Friday's, but if it bleeds over to 12:01 Saturday morning, step on them three times as hard as you normally would.
or
abolish the casual friday idea, which is probably a better idea. You opened the site for fans of both shows and that's they way you should have kept it.
It would be a damned shame to lose BSGCon just because some people can't resist their nature for idiocy.
Just my take.