I am a mobile repair service. I do not have a brick and mortar shop.
For the most part (99%), my customers are recurring customers who get their units serviced on a regular schedule. But every now and then I will get a "walk in" who only wants a part for work they are doing themselves, basically making this an over-the-counter sale. These customers I will probably never see again, or if I do, it will likely be several years.
Rather than setting these customers up as unique customers, is it ok to create a customer called "Cash Sales" or "Occasional Sales" or something similar?
McDonald's doesn't ask for your name, phone number or address when you go in - even if you are a regular.