In 34 years (34 years? Holy…) I have customized my calls to a tee. Before I call, I look at my schedule, my due date, my inventory of other orders. I then pick my days and times and hours.
I generally like to schedule my first appointment at around 10am, based on not worrying about rush hour traffic. I then call the broker or owner, introduce myself and say, “Is it possible to be there blah, blah at 10am?”. That takes away their first choice. About 7 out of 10 times, that is fine with them. If they have a problem with that time, I suggest the other options I have already thought of. That keeps me in charge as they haven’t done the scheduling research I have.