Supermarket photography

[DennyCrane]

The best approach is to talk to the general manager of the business in question, explain you're doing a project, article, etc and that it's not about their business in particular, but about shoppers, products, ...lighting? whatever, and you'll give them a nice "And a special thanks to the great folks at Acme Mongomart for their wonderful assistance in this project" at the end. It's hard to resist free advertisement.