I do always try to be polite, gentlemanly (is that a word?).
I don’t think it gets me a better ‘service’ or anything, just don’t like to be rude.
Now, the ‘being demanding’ I may be guilty of. I will sometimes have a specific reason for seeing a wg (I’m in the mood for A or WS, roleplay threesome etc). So I will be quite specific PRIOR to the meeting about what I want from the meet. This gives the girl a chance to say yes or no. What I do not do, is change what I want during a meeting or if I do, I will fully accept a “no”. I do also expect a wg to adhere to the agreed meeting requirements, if we have agreed on something.
I’ve only been blocked by one wg (for cancelling, with 48hrs notice!!). So I presume I’m seen as a nice(?) customer.