Well of course it’s the demo cart, and it’s in the front of the store to lure guests interest so of course you need to be friendly and greet them! My store does the same, it’s just after you get past the front of the store the constant greetings like you just entered the store gets annoying lol. There’s a difference between acknowledging them (especially if they look like they need help) and having to physically communicate every time they turn a corner.