I am just being kiasu.
In years past, during the good years, when there were lots of stables, when the gals were in either decent hotels (with bathtub and semi-soapy rubba rubba action during shower

) or proper condos (clean environment, washing equipment for clean towels = happy gals = good service more often than not), I was a pretty regular bonker. 2-4 times a month. Always double booking.
I could ask more questions and get real answers, get first blood spot if I really wanted, know exactly when the next batch of gals were coming.
I also never had to worry about my bookings being messed up. Cos I was a regular. So messing up my bookings would mean they could lose my business.
Now I don't book as much, so I am no longer a regular with any of the current stables. Hence, I don't ask much questions, if at all. I just ask directly for the gal I already locked my sights on and whether the slot I want is available.
So I become kiasu, and detailed clear info in my booking requests. Makes things easier and transparent for both me and the OKT (or runner).