Dubai: “Welcome to the hallowed halls.” That’s how Mark Jan Kar , general manager of Dubai’s Coca-Cola Arena, introduces Gulf News to the backstage world of the Middle East’s largest indoor entertainment venue during an exclusive behind-the-scenes tour. Mark leads us through the grey-red carpeted corridors lined with dressing rooms, backstage catering areas and private locker spaces used by stars including Maroon 5, Pitbull, Novak Djokovic, Floyd Mayweather, Manny Pacquiao and Dubai Basketball players before major concerts and sporting events. But behind the sold-out shows and giant LED screens lies a side of Coca-Cola Arena most audiences never get to see: a wonderfully chaotic hidden ecosystem that most audiences never get to witness.…