(at around 1h 30 mins) When the Kim family tiptoe out of the house while the Parks are asleep on the sofa, they are barefoot. Yet when later shown running home they somehow have their shoes on. If they had left their footwear at the entrance the Parks would likely have noticed them; it is more plausible that they left the shoes in the garage.
Although it may appear strange for a renowned architect to design corridor lighting that depends on someone in the cellar to operate, the film shows these lights being switched on and off from upstairs in the main house. An alternate access route from a secure area — a panic room — is entirely sensible in an emergency.
The pictures on the fridge at the end are unquestionably Swiss, not German. The magnets display the Swiss flag, the flag of the Canton of Bern and the bridge in Lucerne. However, people tend to put up fridge magnets from places they have visited — not normally from where they live. Germans are perfectly entitled to holiday in Switzerland like anyone else.
