Yellowstone NP is just 6 miles from the campground, so it’s passable for a few nights. You don’t need to spend much time in the campground because there isn’t much shade. Sites are very tight. There is a tour bus that can pick you up at KOA's office for a ride to the park, if you don’t want to drive yourself. There is also horseback riding, fly-fishing, and whitewater rafting nearby. indoor pool, laundry/shower dump station. They have pancakes in the morning. West Yellowstone is close by for after visiting the park.