The restaurant was rather basic and spartan and you get the feeling that the restaurant used to be a gas station convenience store and they didn't spend a whole lot on the remodel. The tables weren't very fancy, and the chairs were quite utilitarian. This establishment does not scream out "date night" if that's what you're looking for as you pass through Princeton, Kentucky. However, it does provide a pretty good value for your money.
Kay's Kitchen did have a printed menu but also two television screens on the wall, trying to tantalize you with some orthographically-challenged menu items: "Pork Tenderlion", "Mashed Potatoe", "Mixeds Beans", "Macaronia & Cheese", and if you still have any room after all of that, they offer "Homemade Deserts!"
Kay's is a humble diner that I wouldn't mind visiting again. The Reuben was okay but nothing to write home about. The onion rings that I ordered with my sandwich, however, were awesome.