They want the store to make a good first impression. This is where the greeting comes in. Walmart places greeters at the entrances of their stores. They want their customers to see a smiling face when they first enter the store. It puts a human face on the anonymous corporate entity and by extension discourages shoplifting. Walmart greetings are varied, but they all include a welcome-to-the-store element. Taco Bell uses a standardized greeting during travel: “Hi, welcome to Taco Bell. Order when you're ready." Many other fast food restaurants have a similar introduction; it's simple and straight to the point, it's my favorite