You can never go wrong with an all-beef hot dog sans bun, especially when it's from the beloved Casey's Corner in Magic Kingdom. Hack: order a plain all-beef hot dog and then take full advantage of the condiments area, featuring onions, jalapenos, and sauerkraut. Casey's Corner also offers a Hot Dog of the Month, which, in the past, has included some keto contenders (think: a Greek-inspired hot dog, Philly cheesesteak dog, and pulled-pork-topped dog).