John, you have to watch the recommendations ... going from the North Rim of the Grand Canyon to Cody to Custer to Glacier and all points in between ...
They forgot the USS Arizona Memorial.
You're going to spend a whole lot of time driving and probably end up with hemorrhoids.
With sons living in Big Sky and Bozeman, I've spent quite a bit of time in the area. Stayed in the cabins in the park, eaten there, hiked there ... and fly-fished a lot there.
I haven't seen more than 1% of Yellowstone.
While I operate more like a local, I do remember my first trip out. Lots of driving.
The park is really big and the traffic can be very slow at times ... folks from New Jersey get excited when they see elk, stop their RV's in the middle of the road and start taking pictures. "Bear jams" are worse.
That's what the park is for. Those of us in a hurry to get to one of the hundreds of trout streams just have to embrace it.
Consider taking it easy. Make this your "first trip" and get familiar with the area.
There are places, for example, on the edges of the park:
* Just south of Big Sky on US191,
http://corralbar.com
* In Paradise Valley north of Gardiner,
http://www.chicohotsprings.com
A lot to miss. If you get into my favorite town, Bozeman, you'll like Granny's Donuts,
https://www.facebook.com/grannysgourmetdonuts/