Anyway I didn't actually make an appointment beforehand, partly because for several reasons I was not sure whether I would be going to Gamescom after all until pretty much the day before (in fact, until the day before Gamescom started, I thought I wouldn't be going after all). Still, I doubt they'd let me in on a behind-closed-doors demo as someone from Wikia even if I tried making an appointment. I probably would have had more of a chance of getting in if I was still working for Polygamia.
Still, I did not have an appointment with EA/BioWare either, and yet I did manage to get a VIP card that gave me unlimited access to their business area.