As the family meeting is about to begin, Håkan is seen busy inserting his snorkel's mouthpiece into his nostrils. In the next shot, however, the snorkel is dangling freely from his diving goggles.
Karin's passport gives her date of birth as September 5, 1987. This would make her not yet 25, during the events of the film. Yet, she is the mother of a teenage daughter (and two sons).