Despite the negative reviews, I would say this Starbucks has pretty good service for the volume. They are extremely busy in the mornings, but most places that serve coffee are- if you just order a black coffee and pastry you'll be out in a flash.
However, if you order any other beverage when there's a line, be prepared to wait. Some serious redeployment is needed as there will four people on register and one person on beverage- with 30 drinks lined up.
I have to admit, if the line is out the door I go to my office and come back later.