One star. If you're the owner or manager you're getting the lone star because some of your staff sucks. I won't say all because I don't spend all week coming back hoping for better customer service, but on my recent couple visits its been fairly bad.
Instance one: Young brunette girl was way more interested in chatting it up with the other girl in the back then focusing on her orders. You have a line and people waiting, yet somehow discussing snapchat was her main priority. Always a pleasure when someone tells you "Have a nice day" with their back turned.
Instance two: New guy overcharges order on free boost sunday. Thats ok, he's learning and he wants to do right by the customer by offering extra boosts to compensate. The problem is that he's clearly having difficulties processing the orders and making smoothies, and the other guy is too pre-occupied being "fake-busy" to offer him help. The cashier is new, get off your lazy tail and help him for goodness sake.
Instance three: There won't be one. I'll go to Krayvings down the street and pay the extra $2 for better service.