I do not understand why people aren’t satisfied with the uppermost (open) case of whatever when there’s a large stack (and, let’s face it–everything is stacked at Costco). I watch them struggle to lift 4 or 5 cases so they can pick one box of raisins from the 5th level down. I get if there was one left on top that was crushed or some other moron opened…but, really?
The other one is the family of 5 that walk next to each other (think front line of an NFL team) while pushing the cart as slowly as possible down the ‘wrong’ side of the aisle.
I’ve found that at my Costco, the front pallet of milk is usually a day or two fresher than the one behind it, probably because they know everyone grabs from the back.