Jim Reilly, the tavern's greeter, sits on a stool outside the front door.
Thus the role of Wal-Mart greeters is unlikely to be emotionally exhausting, because few, if any, interactions between the greeter and customers are emotionally charged.
He then moved on, revealing a last greeter who had been invisible behind him: Fidel Castro.
If you guessed Walmart greeter, you're right — for now.