At Earl of Sandwich, for a CS credit, you get a sandwich, additional item and a drink. (You can get salads and wraps too.) You do not get a sandwich, side, dessert and a drink. Your dessert would be considered your side.
I can't remember what the price was, but the side could include everything under $3 I think? Or $2?
Things that could be your side are: bag of chips, cup of macaroni or potato salad, cut fresh fruit like strawberries or grapes, small yogurt parfait, cookie, brownie, muffin are some examples.
The drinks that are included are fountain drinks, bottled waters, bottled soda. Not all the drinks in the case are included, for example, Powerade.
You can ask anyone there when you get into line about what is included, they will be happy to help you. Usually there is someone there to help while you are waiting in line (usually long but moves quickly).
Hope that helps a little....