Well, they are actors.
The lightsaber is a NEAT effect, one I wish I hadn't been spoiled on, and I'm sorta surprised it is spoiled in the main advertisement. But even it is CLEARLY CGI enhanced with the molten metal appearing as the saber moves, and the slot it moves in not clearly there before it moves. Either they are using the best gag, and ruining it, or the ride is so awesome, showing that is no big deal (which would be awesome, but not holding my breath).
Regardless, I don't believe there would be any sparking in an enclosed building, just feet from the riders.
And the laser blasts shown here are most definitely not from the patent Disney has for the laser blasts, since those rely on spinning objects that are not invisible, and I can't imagine will be near the riders, for safety reasons.
I'm amazed how so many people seem to think Disney has figured out how to truly do magic for this ride. I mean, c'mon.