Thats what the reviews are for-to help you determine what to expect. But in general there is no norm, they are all different.

I don't think it is reasonable to "expect" those two things, but they are pretty common activities during these sessions.  In my experience, oral and anal are typically either performed or available. There are times when the provider may not be comfortable with bottoming (receiving anal) from you or may have gotten too sore from recent business.

You can ask on the phone if they are functional and if there are "extras" (which typically means she will charge more for anal).

With a full service escort, you can certainly expect oral, both giving and receiving.  Some girls are better than others, so check out the reviews.

I have been with 1 that was talking on here cell phone while I was giving her head.  She than gave me more of a hj than bj.

Regarding anal, I want a girl to top me and have been very disappointed here.  Even though I explicitly stated in an email what I wanted and was assured that would not be a problem, it was a problem.  She didn't get hard.  Very frustrating.

Again, if you are into being the top, a fs escort should provide that.

Finally, I have noticed that the young, very pretty girls have attitudes.  Now, if you are young, attractive and a stud, you might not have an issue.

I am 50, a bit overweight and as I said, prefer to be the bottom.  

Good luck and have fun!