Factual error: When we first see Fatima Blush, she is waterskiing. She is doing several stunts, which are only possible with one ski, the most notable being skiing backwards with one foot in the air. However, when she releases the tow rope and skis up the ramp into James Bond's arms, she is on two skis. (00:45:55)
Continuity mistake: When Bond enters the tunnel, a workman at the entrance disappears in the opposite angle.
Continuity mistake: When Bond and Domino jump into the water from Palmyra with the horse, Bond is wearing a very tight fitting brown jacket and shoes. When he emerges from the water a second later, he is shirtless and shoeless. (01:48:15 - 01:48:55)
Revealing mistake: When the movie begins Bond climbs up a telephone pole. From behind he is obviously not Sean Connery: not only his build is different, but his hair is a weird squared wig, maybe some sort of security helmet.
Continuity mistake: When Bond enters the room to free the woman there's a chair next to the bed. A shot later it's a meter away. (00:03:40)
Visible crew/equipment: When Bond arrives at Shrublands the moving boom mic's pole is reflected on the car's windshield.
Revealing mistake: After Bond throws urine at the thug, and he collapses with all the glasses stuck to his back, note the protruding pad underneath his shirt where everything's been attached to.
Revealing mistake: When Jack's car crashes, the actor with a military hat is replaced with a stunt driver wearing a silver helmet.
Revealing mistake: When Fatima is blown up by the explosive charge, there is a wide shot of a dummy standing in her place.
Continuity mistake: Right before Bond grabs a bike and chases Fatima Blush, he is eating an apple which swaps from yellowish-red to fully yellow, between shots.
Revealing mistake: After Nigel and Bond meet and stop walking, there's a group of bystanders behind staring at the shooting of the movie.
Continuity mistake: When Nigel falls in the water, his hairstyle changes between shots. Sure there's a two seconds shot in between, but that would mean that Nigel had that short lapse to let go his suitcase, bend his head backwards, comb his hair and grab onto his suitcase again... Impossible.
Continuity mistake: Domino grabs the pendant with her hand positioned sideways. In the close-up, the palm of her hand is face up. Then it swaps to the previous position.
Continuity mistake: After fighting against the shark, Bond swims upwards and there's a lady holding a fishing rod. The position of her hands changes between shots.
Revealing mistake: When Bond rescues Domino from being sold, and she hops on the horse, Kim Basinger is replaced by an obvious stunt.
Continuity mistake: When Bond closes the door to stop the shark from entering the cabin, he uses both hands. A shot later the right one disappears.
Revealing mistake: During the shoot-out, all the baddies' heads and hands are bare, except for the one that gets burnt alive, who wears very obvious fireproof hood and gloves.
Chosen answer: Neither is a professional dancer. Having studied dancing some thirty years before does not mean someone has retained the same level of skills. As you mentioned, Connery was in his 50s by that time.
raywest