I didn't know smoothie king opened in the South Park area so I was surprise when I saw it. It's located beside The Original Pancake House and behind McDonalds. The inside is a bit small but they have a lot of healthy snacks and bars to choose from. One thing to note is when you first walk in, the registers are located on the other side of the store and not right in front of you.
When I went in, they had samples of a chocolate cookie which was really good. I ended up getting the Green Tea Tango. You can choose a fruit to go into the smoothie and I choose mango and it worked out really well. It had a matcha green tea taste to it as well so it wasn't overly sweet.
The staff was friendly and informative. They didn't rush me to choose a smoothie and let me take my time in deciding.