Just because a store is appointment only does not mean they aren't open during their normal business hours. A doctor's office has normal business hours, but most medical practices don't let you just walk in and see a doctor without an appointment.

I'm also not sure how requiring an appointment equates to ignorance. Who are all these noisy people demanding that everything is appointment only? I'm not even sure what the problem is. You found someone who did the work you wanted without an appointment, right? Problem solved.