In one scene outside the Pyramid of the Moon, Daphne clips off the buckle on Shaggy's sandal to make a lock-pick. In the next scene and for the rest of the episode, Shaggy's sandal is whole again.
Giza is on the outskirts of Cairo. In the story, the Giza landmarks are just lumped into being in Cairo.
When Velma and Daphne are performing as the Fatima Sisters, Daphne says, "Time to make our exit stage right," but then they actually exit stage left. (Left and right in stage directions are always from the actors' point of view, not the audience's.)