Cool, but just to answer Nors's/Zyvun's concerns:
I acknowledge that running the drones will be expensive, but I believe minimum repair will be required. The drones will be high near the ceiling and projecting the holograms below. Mind you, the ceiling is so high that you'll need a good aim and throwing ability to hit the drones even on purpose.
I also believe that people are willing to pay very good money for a real-life virtual experience, perhaps fifty to a hundred dollars per person.