We just got back on Monday night. We had a great time. I know everyone says you have to be there before dawn but we never made it into the park before 10AM. We saw plenty of wildlife though. My strategy was to cover a lot of ground and take short breaks and hikes occasionally. We drove an average of 177 miles each day.
I wound up taking the 16-35 IS, 24-70 2.8 II and the Sigma 150-600 C. I bought a Peak Design Slide strap the day before we left and I left my Black Rapid at home. I carried everything on the plane in the MindShift Backlight 26L and never had any problems on Delta. I packed my tripod into one of our suitcases.
I carried the backpack on a few hikes and it worked out well but I wish there was a better way to carry the camera and the backpack at the same time. The Slide wasn't comfortable under or over the backpack straps.
I left the 150-600 on the camera almost exclusively. While we were driving I kept the camera on my or my wife's lap. We shot a lot of pictures from the car or stopping at the nearest pull out and jumping out of the car. The few times we hiked I kept the 150-600 on the camera until I wanted to take a landscape shot and then put it back on as soon as I was done. Overall that worked out pretty well. There was one time at Jenny Lake overlook where I only had the 16-35 on hand and we ran into a bear with cubs but she stayed around long enough for me to run to the car and swap lenses. We all used it handheld, even my 95 pound daughter.
I used the 24-70 with a CPL as my primary landscape/family lens. That worked out well for the most part. There were only a couple occasions where I left the 16-35 in the car and wished that I had brought it along. On the other hand almost every time I brought the 16-35 I wished I had the 24-70 too.
I only used the tripod a couple times, but I was happy I had it when I needed it.
In hindsight I wish I had brought a small waist pack to carry one of the landscape lenses. Then I could have carried the camera with the 150-600 on the strap over my shoulder and the smaller lens around my waist.
I haven't looked at the stats in LR yet, but my SWAG is that the FL distribution will along these lines.
We were there for 9 days and we shot 2200 pictures.
I'm going to add posts as I sort and PP all of my pictures. I'll try to just add the best ones to this thread.