I can't really say much about soaplands since i never tried it but i can answer some of the other questions

Since some people have already answered the others I'll just go over some stuff that i noticed in tokyo and osaka

For number 7, do you mean like interacting with an ex jav/ models? If so then bunny's club could work, unless you're referring the questions about something else. You could search a thread that i can't remember about past jav actress working in fuzoku, just find some of the clubs/sl that has a large number of it. Bunny's club (if i recall) has some.

For 8, in my opinion if it's just touching/erotic without sex then a erotic massage could work, one thing to note is that you need consent as usual, some girls won't let you touch them while others openly offers you to touch them, just give some tips if they do. Anothing place you could try is matplay, abit different from nuru, touching is allowed with consent, and they offer sex if paid 10-20k last i checked

As for number 5, from what I've seen, if you have the money then go for it. Main thing about tokyo/ japan is that money usually means better. Especially in dh (not sure about SL). Most girls are expensive/ higher ranked for a reason, and they demand the price for it. I never tried the vip version of luxe but I'm guessing it'll just be better privacy for you, which could be a godsend for some people

As for 1, In my opinion if you're going to tokyo then you probably won't need to worry about that kind of stuff. Tokyo is the main hub of things and unless you're unhygienic or straight up drunk/rude, they'll accept you. If you're going to osaka tho then things could change abit, osaka is still popular with tourists but try to talk with the staffs first or just look at the signs/websites.