Here are a few comments from English-speaking travelers in Japan:

- The Japanese are curious people who love to laugh.
- In Japan, you don't drop in on people unless you've been invited
- Hitchhiking is not accepted, no wild camping and there are few genuine campsites in the country; laws govern life here and must be respected.
- Foreigners' awkwardness can be forgiven in Japan, but don't push your luck with the rules or you risk deeply offending the Japanese and, above all, making them uncomfortable.
- Weigh your words, your attitudes, and show humility...
- The country is incredibly clean...but not the beaches...
- Japan's modernity: the toilets are among the most technological devices you'll find... And in a hotel, controlling the bath and shower water temperature depends on an electronic device that's often quite complex!
- Except on the main train lines, everything is marked in Japanese. The signs, station names, ticket machines, etc. So it's really not straightforward for those who don't speak some Japanese. Fortunately, you can find translated maps at tourist information offices that will be very useful.
- If you're a fan of manga and electronics, I recommend heading to Akihabara. All the major electronics and manga stores are there.
- As for electronics, there are duty-free shops... but if you buy your equipment new and tax-free, you risk paying customs duties at the border (when you buy duty-free, merchants staple a copy of your receipt to your passport). It's therefore more interesting to favor small second-hand shops.
- For outings in Tokyo, I suggest the Shinjuku or Shibuya neighborhoods. You'll easily find nice little bars
- Generally there's no need to take taxis given the quality of transportation in Tokyo.
- For hotels with good value for money and well-located, it's worth choosing those near the Yamanote Line. This line is Tokyo's main line.
- Flights generally cost between 650 and 900 euros, even more sometimes.
- It's advisable to bring a watch because you can't use your phone as a clock (unless you have international roaming). With an iPhone, you might be able to connect via WiFi, but you'll need Japanese power adapters.
- Japan is a country that operates primarily on cash payments, so it's advisable to withdraw substantial amounts each time.
- If you're staying in Tokyo for several days, you should get weekly or daily passes (Tokyo is a very large city!).
- You can find hotels in Tokyo for less than 3,200 yen but they're often hotels for tourists that are quite far from the main neighborhoods, though you'll make significant savings. However, in Shinjuku it's impossible to find a hotel for less than 3,500 yen.