[Nadya]

Places will enforce it - I'd say most do not - but my sample size is only large enough to say confidentially that the places my friends went to do not, with one exception that enforced it.

Source: Friends with tattoos who have visited Japan as I don't have any myself.

E: This is one of very, very few shows I'd ever recommend and it covers this topic: https://www.viceland.com/en_us/show/needles-and-pins , specifically the ones in Japan and South Korea which have very similar culture surrounding tattoos.