This reminds me of Korean TV shows where department stores have VVIPs instead of just lowly VIPs
I don’t believe I’ve ever seen a Korean tv show.
In my experience, department stores tend to be thinly staffed, so concentrating the staff on shoppers who are more likely to buy makes some business sense. However, a small retail business had better treat each customer as if she’s the only one they’ll ever see, or they’ll be out of business.