I assume it's an electric oven? You aren't likely to find parts anywhere on thanksgiving, or a repair man.
I have an oil-less infrared turkey cooker you can borrow, assuming you are in bcs. It runs off a propane bottle, you place the turkey upright on a rack inside and it turns out just like a fried turkey in a couple hours or less. We are leaving town around 9-9:30, if you need it, let me know before then.
As mentioned, inspect heat or an offset grill could be used to cook dressing I assume, you just need a hot box to cook it in. As long as the heat isn't directly under the pan, it should cook fine, though a little more labor watching it maybe. Not sure what all is on your menu.