I love that the dishes that are vegan are clearly labeled. I also really like that the nutrition information is available, so you can count calories! Outside of Michi Sushi and Angkor, Wok Box is one of the only Asian style restaurants I'll eat at. While I appreciate the authenticity of Viet Thai and Lang's, I just don't trust that I am getting a vegan meal every time.
Cons: South location can be a pain to get to.