For me Golden Week is certainly not the best time to travel in Japan.
Because the majority of Japanese people will have these days off, making it one of the most popular travel season in Japan.
Of course, some of them will travel abroad, but as it’s the most expensive season, a lot will stay in Japan.
This results in crowded popular sightseeing spots!
Airports, train stations and highways will also be very crowded.
If you live in Japan, then you probably have your vacation during Golden Week as well.
Not only is Golden Week an expensive season, it’s also difficult to find vacant accommodation, rental cars etc.
You need to plan ahead and book everything months in advance…
Have a good day.