I'm not fond of that saying,either. Because the customer is sometimes just a pain in the patoot! I remember my days in retail at Silverwood, many years ago. I loved being able to solve problems for people: call around to find what they wanted in another store, dig in the back room for a coveted item (it was a very tiny back room, by the way), answer questions, etc. But there was that occasional person who I wished would have chosen some other vacation destination.
Most of my co-workers were teens, so I felt like my 50 years of life experience were highly valuable in certain situations. Like when a mother asked me about height restrictions on an attraction, and she was holding a crying baby, and a whining toddler was milling around her knees, and a school-age child was shifting impatiently from one foot to the other, and by the expression on her face I could tell she wished she was at home taking a nap. I had sense enough to give her a clear, slow answer, and not brush her off with a canned response like my younger co-workers might have done.
I am sure the bakery people appreciate your baking experience as well as your life experience!