The Cape Cod Cook-Off sounds like it might be a grand smorgasbord of northeastern American cooking. However, the fare is mostly run-of-the-mill hamburgers and French fries.
The real attraction of the Cape Cod Cook-Off is the live entertainment. Several times throughout the day, a live show called "Donald's Boat Builders" is presented in the main dining area. It's a cute show featuring Disney characters, and—like the food—will probably appeal primarily to the youngsters in your group.
If you're visiting with children and you want to feed and entertain them in one shot, the Cape Cod Cook-Off is a pretty good bet. Otherwise, you'd be much better off eating at one of the other restaurants in American Waterfront, as there are far better choices to excite your taste buds.