do many providers allow COB, CIF or CIM?  If so, what it is the right approach in asking and does it typicall cost extra?

You will need to be a VIP member, in order to read the juicy details and that will let you know what the real menu entails. Never discuss any sex acts while on the phone or in an email. When you call or email for an appointment, you should have all your questions answered. Good luck

As far as all inclusive; yes. Concerning 'she will do it with you'; eh, not so sure one should assume.

I don't allow them, but anyone I've known who allows facials, charges axtra

allow facials without an upcharge.  Standard request of course is to keep it out of the eyes, nose, etc.

And was only asked not to get it in her hair on one occasion.
At close range, aim for the forehead