After going to Dennys in Carbondale, which was unremarkable, and the staff was as lackluster as the food. We tried Dennys in Waterloo. Our waitress, Erin was attentive, courteous, and very friendly. Food arrived quickly, well-prepared and hot. What a welcome surprise. This woman is a great representative for Dennys. Professional, polished, attentive, polite & very courteous. A+ Dennys.