No, Underground Conference is not really "Elite only". That claim is from back the days when demo partys used to be infected by gamers and commercial sponsors and shit, which is no longer the case these days. However, Underground Conference all is about going to the limits in every regard. If you are an unstable person, this might be dangerous. We therefore want to make sure that orga team already knows about your party habits. Also, we don't want "lame party animals". UC has so many weird competitions that there is absolutely no excuse for not taking part in any. You can't code? Fine, but maybe you can dance to a SID tune, or drive an offroad vehicle? There are plenty of options. And of course you may simply offer to help out being part of the organizing team.
Due to all this: A registration here does not mean you are approved to join the party. It's an application. You really have to suck a lot and be a total lamer not to be approved, but if you aren't sure you are well-known to the organizers, please give us a little bit more info about yourself.
Once you are approved you'll receive a mail.