Well this IS a good sub. What's not good is watching a manager pick on an employee. Mr. Manager, if you've been doing this 14 years, as you sneer at your cashier, than you should know that if you're going to be rude to your employees, you should take it in the back.
Your attitude cost you 1 star.
And by the way, I have 15 years in foodservice. You were probably a cashier once too.