Well another cunning part is that they may have technically not voided a number of regulations because the area is already a designated construction zone. If they have filed plans as part of engineering coursework… Maybe they drew up the plans as theoretical project work related to the hydroponics conversion, and someone had them officially filed as part of a computing project. If they were then to have a valid temporary safety inspection and permit for the performance, they might actually be within bounds. Of course they are going to look pretty silly doing dress rehearsal in neon safety helmets.