Pros
If you don't gain anything else you'll at least learn how to deal with customers. It's also a great way to see how high and mighty people can act if given just a bit of power.
Cons
This is the last place I would tell anyone to apply for at the moment. Delhaize has become so enamored with cutting out another penny that they are running the stores and employees dry. Morale is below the floor and everything that made Food Lion worth working at has been either cut completely out or dropped to such a small amount that it's almost a joke. Management is constantly being shuffled about and every one above the store level is only looking to cover their back sides incase someone comes along looking to cut them off as well. All it has led to is a lot of fools running about acting like kings. Unless changes are made to bring the focus back to the store level(customer service levels and employee compensation) then this company will never regain its former position as a market leader.