Yes, reserved now.
However look 2 years out. If back in the day MacWorld Expo could get North and South then Apple should not have a problem with getting 2 or more of the building as well.
Two years ago WWDC took weeks to sell out. Why would Apple want to spend a ton more to reserve a much larger facility at that slow rate?
I wonder if these events will start doing something to limit scalping? What could they do?