There are 2 SB locations at Square One: Food Central and upper-level of Target, near entrance/exit doors of bus terminal. If there's a long ass line at food court location, head to the Target one! However, the Target one is a little less efficient for some reason.
Person who took my order was friendly, but I had to wait quite a while for my drink. Perhaps the food court SB barista works faster 'cause they're used to the long queue? I dunno.
There can be a line @ the Target SB as well, but definitely less of one than Food Central!
Btw, Chocolate Chai Latte was pretty gross, but it's just a personal preference. Tasted like the Chai Latte, which I really like, but with chocolate milk. Not a good combo!