Freddie has a large tattoo of a dragon on his upper left arm that frequently changes to his right arm throughout the film where the picture is reversed left to right.
When Jill and Jack are talking about happiness and drinking from the green bottles at about 17 minutes into the movie, Jill gets up and asks Jack if he is happy. She puts her forehead against his. In the next shot, her head is several inches away from his.
When they are filming the commercial, the director asks what happened to the lotion. In the next scene, you see the bottle laying next to Jill's forearm. When she reaches to grab it and hand it to the other actor, the bottle is standing up in the sand.
In the scene at 7:05 into the movie that shows Jack and Jill driving down the street, the picture is reversed left-to-right. Jack is driving on the wrong side of the car and lettering on signs is backwards.