We hunted 18 for first rifle last year and everything mentioned above is our experience.
1. It's close to Denver, so it gets pounded by OTC archery hunters. I've hunted first season in several other units and still heard screaming bulls. The pressure there is so bad that the elk never made a sound.
2. The vast majority of the unit is burned, so it pushes the crowd to anything that still has dark timber. We did find elk on the Thursday and kept an eye on them. By Friday evening, there were 40 other hunters all looking at the same group. It got almost laughable and we said "These are the most popular elk in the county."
3. There are a lot of roads that can help some hunters, but when you get off the road, it's much steeper than you would think. With the burn you can get high and see a lot of country, but unfortunately we saw more moose, deer and bears than elk. Several in our group didn't see or hear and elk for the entire 5 days.