Festivals is religious events. The ground where they are held is purified and consecrated by lamas, so when you are watching a festival you are, in essence, on the perimeter of an outdoor religious ground. The conduct of the onlooker should be governed with this in mind. The dancers whether monks or layman, are in a state of meditation. They transform themselves into the deities, which they represent on the dance ground.
Following are different types of Festival Tour