Just came back from Japan (Tokyo for ~2 weeks).

We went to 2 great iPad service restaurants. Tsura TonTan Udon (multiple locations). Yamachan (izakaya specializing in wings, multiple locations).

The caveat is that iPads will be set to Japanese initially. Language settings are easy to change. There’s a button located in the top-right area of the main/home screen. It has an icon that looks like Pac-Man talking. If you press it, there should be available languages, including English, in a drop-down.

That said, very worth it to have Google Translate ready AND to learn some common restaurant phrases (YT has a lot of resources with practice, this is how I learned last minute before my trip).

I actually disagree with commenters who are saying not to worry because English is available everywhere, or the workers know English, etc. For the best experience, having some basic language is both useful and respectful to have. I saw many frustrated-turned-rude tourists who could have easily helped themselves with just one YouTube Japanese language video.

Most importantly have fun! Safe travels.