"Warabi soapland, clothed" — hear that phrase and some people get it instantly while others don't.
I'm 42 and still out there in the field, so I'll put this together from a real-world point of view.
Why this topic matters
Information about fuzoku (Japan's licensed adult-entertainment business) is, surprisingly, often poorly organized. Beginners especially tend to end up not even knowing where to start looking.
What this means in concrete terms
In a word: knowing versus not knowing changes the quality of the experience.
I've distilled the essence of 20 years of accumulated knowledge here.
Last word
If you have questions on this topic, drop a comment or hit me on social. And check out First Class Ruby while you're at it.