The Portrait and Wedding Labs were always strictly to the trade, and being such, required you to sign up for an account, especially as they would extend credit to their clients. "Opening an account" is as difficult as providing someone with your contact details which you will need to do with every decent provider of services from film processing to lawn maintenance.
Between the Pro-Lab and Pro-Sumer business models we had about three dozen choices here in Atlanta a decade ago. They are all now gone.
As they say, don't make mountains out of molehills. If you need a good mail order film lab, Miller's is terrific. If you still can and like to drive across town to get your film developed that's terrific, too. It's not terribly complicated.