As opposed to southern CA locations, this place takes American Express. Like the branch in Tustin, CA, they use a line, but it is invisibly designated with yellow tape on the floor. Fortunately, during my visit, there was no confusion. At least it's better than the Irvine, CA branch.
The staff was nice and gave us our food while paying with no issue even though we paid with American Express. They were nice enough to explain that they dont sell those ice cream bars anymore. Functionally, it is no different than other branches with the exception of the ability to pay with American Express.