There are fewer uber drivers in Japan - taxis are still the norm. And if I recall the uber is more expensive than taxis generally.
the only advantage of uber is that you don't need to talk to the driver about where to go, etc. If you are taking a taxi, I suggest that you find the details of the place in Japanese, especially if you can get the telephone number so that the taxi driver can key that into their GPS. Otherwise, chicken-duck conversation can be difficult although I have to give it to the drivers because they will try and are so patient.