Ive not been to Norwalk, although I'd very much like to go just to experience the well-known, and well-reagrded, Bader hospitality.
I can tell you that Bandimere Speedway is a great place to visit. I've attended events all over the country and it is still my favorite.
Wear a hat and sunscreen - you're a mile closer to the sun. Drink plenty of water. Most of the altitude effects that people complain of are actually a result of insufficent hydration.
The walk in is uphill - you are on the side of a mountain, after all - once in, the stands reach downhill from the pits - moving back and forth is simple. The view is huge!
The Bandimere family is very conscious of who the customer is - this is a privately owned facility and these folks know that their livelihood depends on their great service. They improve the place every year.
Know, too, that Budweiser has a brewery just an hour or so away in Fort Collins. You can visit there and Coors both - you know, to do a comparison test.
Get ready to hear comments on the altitude every 10-12 seconds. Note that the altitude is the same in both lanes.
Cheers,
Ed