I visited recently after 9 PM so I was glad they have extended their hours. I had not been in the terminal before and I was surprised at how dingy the terminal is. The lighting is horrible. Since there are so many windows to the concourse in the lounge, it made the lounge seem dingy.
The buffet was definitely limited (more like IAH than DEN) removed all food and beverages at 10:30 and were sweeping through kicking people out at 10:55.