Allan, if you are near a computer and checking into this, be sure to leave Casper early enough in the morning that you have enough time in daylight to appreciate the spectacular views and wildlife of the Grand Teton and Yellowstone National Parks. It's about 350 miles from Casper to Mammoth Hot Springs in the Park (Yellowstone, we just refer to as "the Park"). There is usually a herd of elk hanging around in Mammoth, which is near Gardiner, MT, the northern entrance where you will meet Wayne. At least the days are long this time of year.