Firstly, yes I know that's not enough! We are staying in West Yellowstone for 4 nights, towards the end of August. Roughly speaking, I am thinking one full day around Upper Geyser Basin, another day around Mammoth, and another in Roosevelt Country. We are staing a night in Cody after, so can fit in something else on the way through the park on the way through to Cody. Any comments gratefully received, especially on driving in and out of the park, and around.