I wouldn't conclude that immediately. You're better off talking to the programming people at the Worldcon in question than making that assumption. Remember, every Worldcon is a one-shot event. It's not run by a single organization that moves from town to town annually. It's a giant one-time-only convention, set up to run once by a single committee. Each committee is different, and each Worldcon varies from the others in some way.

To see how much variety there is, check out the programs of the various past Worldcons, which are linked from the Worldcon.org web site. Notice how different each convention is and how each takes a different approach to their event.