They showed up, as the 2AM tour was leaving and immediately heard voices, giggling, growling and footsteps.
Something followed them pegging their K2 meters.
As they set up, they witnessed 2 shadows on stairs and in the room lingering.
Box thrown from couch, to floor.
They also said something kept pinching them on the elbow.
They left at 4AM, we will let you know what they get once they get home and research.