Differences between serving me and sessions with me

Lately I've had this confusion of what serving me is and also what having a session with me. Generally what I do is get to know a little bit about my subs before I see why they are inquiring. I'll ask if they are trying to serve me or why are they here. I've had some subs be astonished when I tell them how much it is to be under my consideration for a slave. Serving me, is a daily priviledge which involves tasks and duties in which my subs have to fulfill. As you see here, key words, priviledge. I usually aim for real time sessions with my slaves if they are comfortable and that takes lots of time building trust. So that is what serving me is. Sessioning on the other hand, is coming to me and having me drain a subs wallet or me videochatting with a sub doing maybe humiliation or some other BDSM fun. That requires a smaller tribute, one that is generally comparable to the time of mine that is used. Just incase you were wondering what the difference was for me lol