Just a heads up on national parks... especially the big ones out west... All of them (except maybe Yosemite and Yellowstone) are basically just trailheads. These parks are fucking huge, but there is not a lot to experience from the side of a road. To really experience them, you gotta backpack.
I am not sure what the general perception of backpacking is or if its an intimidating idea. But the reality is, backpacking is fuckin easy. Its basically just walking. And with how the industry has advanced, you don't have to lug 70lbs of shit anymore. My base weight without food or water is less than 15 lbs.
So, if folks are checkin out parks, I really urge em to think about backpacking as its how parks are meant to be experienced.