Some of your regular customers will come in at the beginning, but they will often be too depressed by the sight of your store in liquidation to come back later. You will also get a number of people who have not stepped foot in the store in years, if ever, and often are fairly nasty and demanding. They will want everything for nothing. Your thieves will come out of the woodwork because they think since you're closing, it wont matter. You will get people who think they have the right to just walk into your stockrooms and back rooms to "shop" and look around, and then get mad at you when you tell them they are not allowed back there. I've worked with two different liquidators. Both were former Kmart managers from stores that closed. The first one was a nightmare, the second was a blessing. You just never know who you'll get. Good luck! I wish you the best in your job future.
This was posted by @VIUYDsD-jrl, excellent explanation on what to expect that more people should see and read.