Japan is one of the most technologically advanced countries in the world yet free WIFI hotspots are few and far between.
No WiFi? No problem! You can rent a pocket WIFI device for the duration of your stay. You can arrange to collect it from the airport or have it delivered straight to your hotel. At the end of your trip all you have to do is put it in the prepaid envelope and pop it in a post box. You can find all the information you need to know here: https://m.japan-rail-pass.co.uk/mobile/services/pocket-wifi. Happy surfing!