Around 8/10 girls leave me feedback. Of those that don't/haven't yet, I put it down to either
1/ Being very busy and forgetting (esp. They have a full time job and escort p/t)
2/ They didn't enjoy it much
Dani's post rings true - if a girl really enjoys a session, probably likely to leave fb same day, if the session was 'OK' probably would leave fb when they have time. Even girls who are really busy often leave same day fb after an A1 session I have noticed.
Main reason for aw fb from my perspective is that you need positive fb to see some aw girls, especially hard to book ladies. It can also give you a feel for how you did, although it can require 'qualification' if the sole motivation is to get another booking