When Pepe runs into the hotel after seeing the coach approaching, there is no table or chair beside the doors. But as he comes out to greet the guests, a table and chair have appeared.
When Cora Flange moves her hands up and down to simulate an airplane in the pub, in the very next shot a cloth has appeared in her hand, she is cleaning ashtrays and she moves from one side of the bar to the other.
Cora and Vic Flange argue over his trip with Sadie Tompkins to Ells Bells, but when Cora finishes shouting at Vic she has moved from one side of the bar to the other between shots.
Stanley Blunt chats to Cora Flange on the hotel terrace and asks her about 'free love'. He then pinches her bottom, causing her to stand up. She shouts at him when he's actually sitting behind her. In the next shot he's sitting on the terrace and quite clearly behind her.
As Pepe runs into the office behind the reception desk to change into the porter's uniform, a clock and some wall decoration are above the door to the office. When he goes out to greet the guests, the wall decoration is gone.
When it starts to rain and everyone runs inside and Eustace Tuttle is left outside in the rain, in this shot black tarmac is visible along with what is supposed to be a beach.
When Pepe falls into the hole in the hotel lounge, black darkness-creating curtains are clearly visible and move as he falls through the hole.
When the party gets underway at the hotel, the characters are seen doing several dance movements which do not correspond to the music being played and change their dance style and movements between shots.
Vic and Cora Flange wake to building noise at 5AM. Their hotel bedroom ceiling is removed by hand. In the next shot of Cora and Vic in bed, shadows of ropes are visible, but when the camera cuts to the ceiling again no ropes are visible.
The coach used to transport the guests to the hotel has a British registration number plate on the front and a Spanish one on the rear.
Bert falls from the balcony a second time, but in a few seconds he is back in a room, which couldn't be possible given the way he would have to talk, as he did the first time he fell.
The builders make the two-fingered V sign to Pepe outside the hotel; the expression is only used in the UK, not in Spain.
Cora Flange's voice can be heard as part of the coffee-terrace scene's background chatter although she is talking to Mr Blunt.
When the party of holidaymakers sit down to dinner, Cora Flange's voice can quite clearly be heard chatting in the background as part of the background chatter while she is quite clearly sitting down at the table with her lips sealed.
When Bert Conway sits down outside with Sadie Tompkins in the sun, his mouth doesn't move when he laughs.
Cora Flange's voice can be heard as part background chatter of the pre-dinner scene, although Vic Flange had previously left her to get ready in the previous scene.
When Stuart's trousers get pulled down in the market, his lips don't move when he says "Oh, dear!"
The hotel has a beach although it is clearly nowhere near the sea.
British-made vehicles only sold in the UK are visible in the airport car-park on the Spanish island.
When the Spanish bus is seen driving along the road in the resort of Els Bells, it is driving on the wrong side of the road for a Spanish Island, where they drive on the right.
The sign advertising the hotel on the road is in English although the resort is on a Spanish island.
Pepe was not expecting any guests, but on arrival he has letters for Stuart.
When Cora says to Vic when other guests are sunbathing outside the hotel just before rain comes, "Don't bother to ask me if I'd like a chair", a microphone can clearly be seen in the bottom left hand corner. (This is removed on the DVD version)
At one point in the film Pepe says "Bon Appetit" to the guests. Bon Appetit is a French term meaning "Good Appetite." With him being Spanish he should have said the Spanish equivalent which is "Buen Provecho."