Stay the weekend and go to a concert at the most iconic outdoor amphitheater or visit during the day for the views!
Book a tour ahead of time! See how Coors beer is made and get some samples along the way.
Cool place with a great view to eat and drink, especially for big groups (no reservations necessary, lots of seating, self serve beer/cocktails/wine, different food options, and everyone gets charged to their own card).
Some beautiful places to go take some photos before the wedding (and distances from the venue): - Overpass over I-70 ~2 min (you'll drive over it as you approach the venue) - Buffalo Overlook ~2 min (you'll probably actually see the herd of buffalo!) - Genesee Mountain Park ~3 min - Enchanted Forest Trailhead ~7 min - Red Rocks Park & Amphitheatre ~8 min - Lookout Mountain ~10 min