As the name would imply they do make some dishes on the spicy side. I had ordered a fried pork chop on rice and was asked if I wanted it spicy and I had said yes.
Honestly I don't know if they accept other forms of payment but some of the places I know only take cash so I assume most of the places in the food court only take cash.
After paying you are given some sort of "stub" for your pickup so they can pick up your food when it's ready. When this food court gets busy it's understandable that they'd need to do this. Other places you can hear them over a PA system announcing numbers for pickup.
This place we just hung around waiting for it. (#21) which is the fried pork chop. I had a bunch of people with me and we just ordered a few dishes from a few different places in the food court. This dish was good because seriously it's a deep fried spicy pork chop. The rice wasn't anything special.
Most of the menu is fried it seems which is fine because fried tastes good.