Here's the thing, Roger: it's a convenience store. It's where people go at 2am to get Big Gulps or hot dogs that have been rolling on the grill for five hours and maybe some Nutritional Death Bomb Chips as a side dish. Why should it even matter what you dress like in a place like that? What possible difference does it make? Does anybody who goes into one of those establishments even care what you're wearing? Other than a Klan robe or maybe a crotchless, topless Captain Kangaroo costume, I can't think of a single outfit that could even be inappropriate workware in such a business.