I always tries to make sure the people around me are as comfortable as possible. I am not early, not late. I plan for traffic and other little disasters. There's no excuse for being late. I respect her time.
There is nothing more offensive than someone who talks down to someone and treats them as if they were inferiors. That kind of snobbery has no place anywhere: it's ill-mannered, awful for everyone around you, and it makes you look like an ass. Treat people as you would like to be treated. I pay and never negotiate. I don't think that paying means I've bought anything more than an escorts time. There are no expectations attached.