I could totally be wrong, but I see this as falling flat. I just think the whole area is going to be too dang crowded for anything that personal.
Just like the Sorcerer game at the MK. When the park is packed, there's basically a line at each game station. Everyone knows what's going to happen before they actually get to play the game themselves.
That will happen here. There's going to be lines at each "activity", or whatever it'll be called.
OR... The more likely scenario...
The only real way to limit that could be by attaching a high cost to it. Like the wands at Uni. When they talk about this, I picture Disney seeing the $$ being made on the wands, and coming up with something akin to it for SWL. They could be beginning to create buzz about the whole "interactive land" thing, and later on down the road let us know that the only way to do it is by buying some interactive light saber.