Came in for breakfast with my sis before heading out, I got there a little late and had our waitress (Tera) put my order in a little later, and she still managed to get my food out at the same time everyone else's arrived. Excellent service, checked up on us regularly & filled our beverages exquisitely on time considering how busy it was.
This particular Denny's, however is located inside a casino. It reeks of cigarettes upon entering, I don't recommend for those with a sensitive sense of smell, children or pregnant women. On the upside, there's extra bathrooms in the casino right next to the Denny's which only has one unisex bathroom located inside.