A Starbucks is a Starbucks, very turn-key oriented, so really the only thing you can rate and grade is their correctness and customer service. My girlfriend and I stopped by as we were running errands, while I was in Arizona. There was no one in line and two people already sitting with their beverages.
The staff was polite and courteous, not big on chit-chat or polite conversation. I decided to pay half with my Starbucks App and half cash, and the cashier looked like she was bothered.
However, you may want to double check your drink order on their ordering system as they got my drink wrong. Don't get me wrong, but the place was empty so it's not like they were rushing.