If we are driving, we prefer (as a PP mentioned) the 90's section. You can park really close to your room and it's just a straight shot across the parking lot to Classic Hall and the buses. The computer pool is close by. We don't like the 80's, mainly b/c the color there is very....lurid.
To save $$, if you have a car, you can get breakfast food items and have them in your room. We also bring our own coffee maker. (My mom has used our coffee maker to make hot chocolate or heat up water for soup) We have brought peanut butter and jelly sandwiches into the parks. We have also brought potato chips and other snacks. They will allow you to bring food in, just no glass containers and no alcohol.
When we do get CS meals in the parks, if we are paying out of pocket, we just get cups of water to drink (they are free). I bring in a few sodas for my husband since he *has* to have them.