Went for a Costco run last night, and it wasn't particularly crazy, but it wasn't particularly well-stocked either. Plenty of beer and wine though ;-)
The big annoyance was a complete lack of meat. All the chicken (we hadn't planned on buying any due to my wife's allergy) and all the pork were gone, including things like pork belly that most people don't know how to cook. All the "mainstream" beef was gone too. All that was left were things like prime tri-tip and high-dollar steaks.
We weren't trying to hoard, but needed a package of ground beef, a package of pork tenderloin, and some chuck roast. That was a no-go, and we asked the cashier, who said they restock in the mornings. So I might go back around midday Friday and see if I can get what I need.
Other than that, most things were ok. Produce was there, their prepared [heat at home] meals were well-stocked, and while many frozen items were low-stocked, they were there. We often buy their frozen fish (individually vacuum-sealed filets in 2- or 3-lb bags), so we got some mahi and a bag of frozen shrimp.