Continuity mistake: Jack, Joan and Jewel hide behind a donkey and two men. From the next angle the men are gone and a man in red is suddenly passing by.
Continuity mistake: Ralph is hanging upside down by the well and the rope around his chest appears and disappears randomly between shots.
Continuity mistake: When Ralph is riding on the camel chasing the train, in the wide angles (with an obvious stunt) his clothes flutter. In the close-ups, with a fake background, the clothes remain still.
Continuity mistake: The train is about to enter a tunnel and a "bump" is heard. We immediately discover it's Ralph crashed against the side of a tunnel. Problem is the camel has magically managed to face the opposite way and, what's even more magical, it's now been safely tied up by a big fat rope.
Continuity mistake: From the shots around, the well is not quite big, with its edges almost near Joan and Jack's feet, but on the aerial shots (where it's an obvious blue-screen) its size is humongous.
Continuity mistake: Ralph gets squashed by the donkey's butt near a dark, secluded stable, surrounded by stacks of hay. When he's rescued, the stacks are gone and the donkey's moved away from the place it was, but Ralph remains underneath him.
Continuity mistake: When the guards chase the boy who's written on the wall, a biker falls on the ground and stares at the guards. A frame later his bike is already standing up again.
Continuity mistake: When Joan sees the boy writing on the wall, the passers by have no continuity between the front and back angles.
Continuity mistake: Jack and Joan step off the dingy while Ralph spies inside a crate. The amount of net hanging out of it differs between shots and also a hand suddenly appears between one frame and the other.
Continuity mistake: Joan's editor sips a whisky when they're interrupted by Omar. In the next angle her arm is suddenly down.
Continuity mistake: During the well scene, in the aerial shots Ralph's hand is very close to the ladder, but in the close-ups it's more than a meter away.
Continuity mistake: From a distance, the train to Gadir is seen already in the train station. From a close-up, it's starting to arrive.
Continuity mistake: Jack falls facewards on a crate of oranges, but a frame later he's sitting on the floor with his back against some boxes. (01:05:00)
Continuity mistake: Joan grabs the camera to photograph the magician and a flash suddenly appears mounted on it.
Continuity mistake: Jack wipes out while water skiing and surfaces with his fringe covering his forehead. A frame later the hair is brushed back.
Continuity mistake: After Ralph crashes against the train tunnel, 1) his position changes from shot to shot, 2) the people arriving are close to him but in the next angle are far away, and 3) the camel is facing the people, but when it cuts to Ralph, the camel is facing him instead.
Continuity mistake: At the party, Joan's editor asks for a whisky and right then the blonde next to Joanne and her partner with a grey suit swap positions. Also, his suit turns dark blue.
Continuity mistake: At the party, a woman with a striped blouse flatters Joan while a woman lifts up a book. A frame later, after a brusque cut, the woman and book are gone and a lady with a white hat appears.
Continuity mistake: Jack falls while water skiing and the position of the wave surrounding him has no continuity between the front and back angle.
Chosen answer: Most likely a coincidence. It's a common Middle Eastern name.
raywest