I took one for the team yesterday and went to Costco at 7:30am, and I waited in a line for a little over 2 hours to get in. There was maybe 75-100 people there before me. Inside, it was smooth like butter. The one I went to have their store in great order. They let in maybe 50 at a time, then a few minutes later they radio to the door guys to let in a few more. They have it set-up where you continue the line single file to the back where the water, paper towels, toilet paper, dog food, refrigerator supplies like milk, and a few other items are given to you by the staff. It was pretty awesome how they had it.
That said, I got in a few minutes to 10am, and got out about a few minutes before 11am...give or take a few. I'm about 98% sure I could have went there at 11am and not had to stand in a line still got what I needed. I'm going to go next week to get 1 more TP and water for 'cushioning' at my house so I do not need to get those items again for awhile. Therefore, I can go there and get all the other things I need much quicker.
10000% props to this costco. Most of them know me well since I usually, pre-walking dead, would go there 1-2 times per week.
They were still out of Lysol, hand sanitizer, low on dog food, SPAM (wtf?), and a few of the frozen foods that my kids like (little pizzas, waffles, crunchy breaded chicken, etc).