From what I’ve heard, there are “Japanese Nationals” only spaces. But there are also many (if hazard to guess a majority of these locations) places that, due to their lack of English skills, put signs that mean to them “Japanese language only”, that is to say, they the proprietors of said location can only speak and write in Japanese, and therefore if you try to speak to them in your language, will not likely be able to service you properly. Some of these places will try their best to service you and let you in as well. Granted there are also places that will deny service if you don’t speak any Japanese, and that is ridiculous, but I’d like to think those places are few and far between as well.