Pros
Your order and route is always done and all you do is load up and go. And don't forget to check in with supervisor to let them know you are there.
Cons
Make sure that all the orders being delivered are on the the cart, sometimes they aren't, they won't tell you if you need to wait for an order being worked on isn't ready, if you leave without it will call you back to retrieve it even if you are already aways from shop