My wife, 12 yo son and I will be making our first trip to this area, staying 6 nights in Big Sky. I won this trip through my work, so no other choices on the location. We are excited about seeing Yellowstone, but understand it is a long drive. We are thinking at least 2, perhaps 3 full days in Yellowstone. In the Big Sky area we are looking at Whitewater Rafting (perhaps with Geyser - they also have a combo zip line and rafting), bicycling, and perhaps fly fishing instruction. We enjoy hiking and would consider a guided hike, as well as anything in Yellowstone that might take us off the most beaten paths.