Hello Charles,
Magic Kingdoms Park's,
Casey's Corner, has become a dining tradition for my family. We always make the time to enjoy a meal there and reminisce about past Walt Disney World trips we have taken.
Casey's Corner does participate, in the 2014 and 2105 Disney Dining Plan, as a quick service restaurant option. Quick service meals use one (1) dining credit and include for breakfast; an entree and a non-alchololic beverage and for lunch/dinner; an entree, dessert, and a nonalcoholic beverage. So, yes, the hot dog meal, fries and a non-alcoholic drink, along with a dessert are included in your dining decision making. At the moment, some dessert options at Casey's Corner include, a brownie, cotton candy and the ever so nostalgic Cracker Jacks.
If I can be of any further pixie dusted assistance feel free to ask and may your upcoming stay at Walt Disney World be filled with many magical and memorable moments.
Amy M*o*