The right way to distinguish a professional magician from a hobbiest

I suspect it can be tough to distinguish what a Professional Magician is. I Consider myself as a Professional Magician as I am able take a look into the clients wishes. For instance if I've been scheduled for a trade show I'll take the time to look into the company and learn what key points I want to know to help advertise there service. Like wise if I've been requested for a wedding reception I will need to grasp exactly what the Customer wants, it's not always the same. Some shows I'm asked to float around and just

Sports Fitness and Recreation