planning 2 girl session with a provider that I have visited several times.  have not seen the other provider that she works with. should I set up a one-on-one session with her before the 3-way just to make sure that we are compatible or just trust  provider that i know ??

not necessary..just drop your pants..they will take care of the rest..

lol, After you have your pants back on and want to write a review of the tremendous time you had, whose name do you put first in the review. Then if their menu of services are different, like one allows CIM and the other doesn't.

But it's your dime, so that's not really much of a problem to have. Just sit back and let them go to work.

Crudely put - but essentially true.  Much more important that the girls are compatible with each other than you.  Bon appetit! IMHO doubles are where P4P really shines...  Also a great way to meet a new friend....

And hydrate before hand........

Read this post, lots of good advice

Great Article! I am working up to my first threesome soon!

That often times the guys will want to meet with both ladies individually. I don't think that it is a big deal not to, I guess it depends on what kind of person you are. Do you think you will leave the girl that you already know out, because of "fresh meat" being there? Or, maybe it will add to the excitement.  

After having been part of many threesomes, the surprise element usually adds to the experience.  More often than not, I have seen the other provider separately afterwards...which makes it win/win for all.