Visible crew/equipment: When the kids are shaving in the bathroom you can see a crew member reflected on the mirror.
Visible crew/equipment: Right after it rains gumballs we are back in the hotel and looking at the front desk while the bad guy and girl are talking. This shot is a low angle moving right. On the counter mid-frame is a perfect shadow of the camera as the shot moves to the right.
Answer: The only reason for them to do the hokey pokey is because it's possible. Patrick said that they would do it in the story, and even in the story it's not impossible. Patrick made it happen.