When I was younger, my parents packed up our camping trailer and took us on a tour of National Parks. We saw *lots* of parks -- everything from the Grand Canyon, Yellowstone, Yosemite, the Badlands, Mount Rushmore, the Rockies, etc. Some days were a lot of driving (one day we drove 21 hours) with not much to do, but some days were amazing. I think we were gone for 2-1/2 weeks.
One day after a hot morning of hiking and sightseeing in Zion National Park, my dad let us stop for milk shakes (that was a treat!). And our campsite there had a creek running next to it and my sister and I got to play in the creek. And nobody was particularly hungry for dinner (which my mom usually cooked in the camper), so we made Jiffy Pop popcorn over the campfire. It was *the best* afternoon. My sister and I still talk about it 30+ years later. "Remember that time we got to have milkshakes and popcorn for dinner!?!"
I'm taking my own kids/husband out there this summer. None of them have ever been west of St. Louis. We're not camping (we're flying out an hoteling it -- my husband is not a 'roughing it' kind of guy) but hopefully we'll be able to make some great memories anyhow. I'm excited.