I am looking for interesting things to see, do and stay in the Denver, Rocky Mountain National Park & Estes Park area in the days of September 18, 19 & 20th.

We are driving from Denver and staying in Telluride from Sept. 10 through Sept 17 and going to be in Denver & Estes Park from Sept 18 through Sept 23. We have reservations at Pine Haven on Fall River Rd from Sept 21 to Sept 23, so I still have to find accommodations for Sept 18, 19 & 20th. Any ideas for things to see and do & stay in any of these places?