The Boxes: If you could find a more useless vehicle to transport bought items, I’d be shocked. The boxes they offer inexplicably have only two sides and are impossible to break down once you get home. Tip: Bring your own bags or, if you’re like me and forget, stop by the Costco liquor shop before you go into the main entrance and pick up FOUR legitimate sided boxes.
The Checkout: Do not give them your card until you tell them very directly that YOU will be packing your own groceries. Personally, I don’t care to have twenty raw chicken breasts lobbed on top of fresh asparagus, but this is of no importance to the cashier. I’ve watched horrified as they sling shot my groceries, mountain high, cross contamination be dammed. Broken eggs, squished bread, and deodorant jammed into a box. This is the way I pack: one box for frozen items, one box for raw meats/seafood, one box for ready to eat items such as salad, and the chemicals/detergents go underneath, separate. It's easier to unload at home and safer.
Timing is Everything: Do not go on the weekend, no exceptions. This is when the whole world goes to Costco (bringing their entire family) because it’s when they demo the most food. I swear, people treat these food demos like a Las Vegas buffet: Lady, it’s a taste of smoked salmon, not your entire lunch. If you like it so much, buy it and eat it at home, stop blocking the aisle with your errant cart.
Parking: This is a phenomenon exclusive to Costco and the state fair. Hey, cute couple in matching Adidas workout clothes, stop circling the nearest three rows and park already. Holding up traffic with your blinker on as a stressed out mom speed packs her minivan is tacky, MOVE ON! What is with the waiting blinker? You can’t call dibbs on a parking spot clogging up the flow of traffic: Park a few spaces over. I know you’ll have to walk a bit further, but you are going shopping on an acre of Costco, are you not? A few more feet won’t kill you.