The sandwich is special, so go at least once for the experience. The past reviews said it all- fries + coleslaw + your choice of meat between two slices of white bread. Do it.
We also got the chili cheese fries, which were pretty bomb.com. If I ever went again, I would probably just get the chili which had large chunks of tomato. So good.
Cash only unless you want to end up doing their dishes.