One thing to remember is many (most?) UD students do not purchase a full meal plan for years 3 and 4. By the third year, most students living on campus reside in dorms with kitchens. My son is a Junior at UD, and lives in an on-campus apartment with one roommate and they have a bathroom, living room and full (but small) kitchen. While his housing cost increased a little this year, his dining plan dropped 80%.
Yes, I now spend more helping him buy groceries, but it’s not nearly as much as the food plan was. So the net result is a decrease in overall Room+Board costs in years 3+4.