I have been to the CS once, the TS about five times. I would not eat at the CS again over the TS. Have never had any of the food at the CS that is also sold at the TS though. I will say the container you get with your CS entree contains mostly rice and not so much entree.
If I were looking for a light lunch, before I did the CS I would go to the TS and order appetizers. But that is just my opinion, I don't go with a food budget, and I don't get a table, I sit at the bar. You may not want to go through the table service rigamarole just to have a light lunch, in which case the CS will suit you. Not sure what time of year you are going, but all CS seating is outdoors and unless they have changed things there is little shade.