Continuity mistake: Mario was chewing a mouthful, then lifted his drink to wash down the food, but when the camera shifted, he was back to chewing a mouthful. (00:01:59)
Revealing mistake: The way the outside steps were constructed - a series of perpendicular boards with no side support - would not be able to hold weight. They would easily collapse under pressure. (00:38:53)
Continuity mistake: The amount of water in Paco's glass varied, including increasing (back to about one-third full) after he drank some. (00:39:18 - 00:39:55)