Located in Greenway Center, Denny's is open 24 hours. Get a Denny's classic like a Grand Slam breakfast or a Moons Over My Hammy sandwich. For your sweet tooth, indulge in a Pancake Puppies Sundae - three deep-fried, bite-sized cinnamon sugar pancake balls with vanilla ice cream and hot fudge - for just $2. Kids eat free on Tuesdays and Saturdays.