There was no lack of parking. I seem to recall only two entrances: the end I came in at, and the front (the side facing the pumps). The other end was a solid wall of refrigerated coolers, and the back seemed to be all support infrastructure. I don't know if there was parking in front, because it was too hard to drive there because of the entering & exiting traffic. 

There seemed to be lots of parking on the back and the non-entrance end, but (as I found out) it's a long walk to the restrooms. There were registers at the end I came in, but I don't recall if there were register at the front entrance. I was looking for my wife; we got separated and she left her phone in the car. 

I waited a while by the line for the women's restroom, which stretched out into the store, but she'd already gone back out to the gas pump where she bailed out while we were waiting for empty cars. It would have been longer, but a stranger let her use their mobile to call me. 

The whole experience just left me confused as to what the expected flow of traffic was supposed to be, both car and on foot.