Such a huge building full of thousands of stalls, ...

Such a huge building full of thousands of stalls, vendors, and booths. The system of elevators are plentiful but can get rather bogged down during big shows. The escalators and stairs are plentiful and there is even a covered walkway between buildings. They do have food vendors, vending, and plentiful restrooms. You can find handicap accessible parking nearby, elevators, and restrooms if you need them. Don't get lost, it feels like a neverending labryinth here.