As well, huge girders and overhead catwalks have been added, surrounding the stage. To these have been lashed and epoxied a fearsome arsenal of lights, speakers and holoprojectors. Combined, they're capable of causing severe damage to those not equipped to handle the punishing sound-wattage and radiation.
Much the same could be said, in fact, of the boisterous crowds that usually attend. Spectators enter very much at their own risk. Hawkers, mostly dented-up former service robots, hover and clamber over the stands, offering food, drink, souvenirs and, depending on the event, objects to hurl at the stage. The noise level rarely drops below deafening.
Behind the spectator galleries, the inner portions of the spires are a little quieter, offering lounges and bars.