Tetons

Yellowstone, we spent a day on each quarter loop. It was enough to see the roadside sites at a pretty fast clip. The SW loop, in particular, will take sunrise to sunset with no down time at all. Although, if your crew is not particularly interested in geothermal features, I could see doing only two stops...the stop with Grand Prismatic and the one with Old Faithful. If you do the longer hike at Old Faithful, you will see several dozen thermal features, and that might be enough. My kids did comment that they all started looking the same. I might agree, if you've seen 30, will 100 of them make it better? I thought so, but tech kids likely won't.