It wasn’t that long ago that the answer to that question would have been no, with public WiFi very thin on the ground even within hotel accommodation. The Tokyo Olympics didn’t go to plan, but one factor that was planned in was a wider pitch to tourists, and this included a huge expansion of available free WiFi options. Having travelled extensively through Japan over many years, I can say that it’s better than it used to be – but it’s hardly simple, and can be a tad baffling if you don’t have a decent grasp of written Japanese for signing into web portals and such. You could get by with a little patience and pre-planning if your accommodation offers WiFi, though. There it’s more likely to support simple sign-ins, and if you offload maps, podcasts and video content from there to keep you going, and then use the WiFi in coffee shops and some shopping centres, you might be able to do so for no additional cost. Compared to, say, travelling Europe or the USA, however, it’s still not as common or convenient, and having a decent VPN installed is a must.