In other places, "MP" means "massage parlour." A place where you can walk in for a massage, which will have a happy ending with no fuss. Other options will usually be available such as topless, reverse, body slide, etc.
For some reason, Kelowna has 3 different walk-in places. To avoid laws against brothels, you only pay for the time with the woman, but I think you can assume full sex would be available. I'm sure you could ask for a massage instead.
Massage parlours are generally much cheaper than the places in Kelowna. This is an important distinction for me, because I'm not interested in oral or full-on sex. Kelowna doesn't have any places I would consider a massage parlour.
You can book an appointment with independent ladies who will give you a one-hour massage for $60, a HJ for an extra $20 and topless for an extra $20. There's no place in town that you can just walk in and get this service (unless you go to a brothel and pay for more service than you're getting).
Take a look at
http://handsfromheaven.ca/ to get an idea of what a massage parlour can be like. You can walk in and get a massage, and pay the price you see on the web site. They don't offer any oral or full-on-sex.
If that's what you want, in Kelowna you have to book ahead with an indy lady. And good luck when you do so because there are very few reviews out there. Try bcclassified.com (Miscellaneous Services), backpage.com (body rubs), craigslist (therapeutic section, but you can tell which ones aren't strictly therapeutic). If you try it, please write a review to help out the rest of us.