In Japan, as you might know, it’s customary to remove your shoes when entering a house, including your own. Actually, customary is the wrong word: “an immutable law” or “one of the worst customs you could possibly break” would be much more accurate.
An “outside shoe” airlock called a genkan is provided for this very purpose. It kind of makes sense actually – why track in all the stuff you’ve been walking through outside? Now I positively cringe when walking in houses wearing shoes, such has the custom been ingrained into me.
Being small, Tokyo apartments are not often used for parties but when they are, you can bet it’s going to noisy and crowded. At least you can survey the number of de-shoed people already inside from the genkan:
Tips for Japan: make sure you buy a somewhat unique pair of shoes and make sure your socks are always in good repair. The owners of these shoes were in a single room the size of a moderately sized bedroom – there wasn’t even enough room for everyone to sit on the floor.
Bonus question: which shoes are mine? Fifty Internet Points for a correct guess!