Just saw an ad for the event while watching voyager on cbs action Apparently they are an official partner of the event:
http://www.cbsaction.co.uk/articles.php?feature=271
Apart from the extortionate prices it looks like the event might not be as bad as i first thought, except for shamasters running it with their crew. Other than the captains the rest of the talks are free.
All the guests have been announced now though.