Woah now im interested in seeing that shop of theirs. 50k yen for midnight to 5 am doesnt seem too bad.
Also one tip saying "Don't shower before the girl gets there so they can get closer to you and check if something's off beforehand" seems like something I'll try next time I'm not in a rush and have the time paid.
Sounds like a clock waster 101 tactic but it might just set the mood to be a lot more lighter and friendlier.
Their methods of getting rid of a guy they don't like by offering CFS upfront sounds amazing. I hope a lot of the girls will want to get rid of me that way too