When I rented a car in Okinawa in march people tended to be less aggressive drivers around me maybe because of the big ass rental company sticker on the back
Agreed. Even at the 3 letter shop that shall not be named it's often worth to pay 27-30k there for 90%+ chance of a really great time with a very beautiful woman.
It's extremely unlikely she will still be working there in 2 years. Not to mention Yokohama is typically not a very foreigner friendly place for sexual services. If by chance they are, you must be able to speak Japanese.
I'm fairly new to p4p as well, only had 3 escorts so far. I've only gone down on 1. Just go with the flow. I wouldn't necessarily say high but there's a risk involved. Keep in mind escorts clean their genitals more thoroughly than your average girl