We’re back and the schedule worked perfectly! Thank you all!
We left Cody at 5am, getting to Old Faithful around 7:45am. We passed the East entrance without having to pay. We drove directly, but we did take our time to stop for views over the lake. We also paused to get out to look at hot springs and steam holes.
The 7:45am arrival time was perfect. The kids weren’t groggy and it wasn’t crowded at all. Best yet, Old Faithful was to go off at 8:08am. I was totally unprepared for how awesome the eruption would be, needless to say.
After that, we had a little time to get our Junior Ranger books and meet for the Geyser Hill tour at 8:30. We happened to catch the Aurum geyser explode while on the ranger-led tour. Then a second Old Faithful eruption right after that one finished! Then back to the visitors center to work on the Junior Ranger books… which took enough time to see a third Old Faithful!
So, it was almost noon, and I knew from above not to rush things. So we had a picnic at Whiskey Flat and figured out the rest of the day. The kids were having fun frolicking in the meadow, so they weren’t too anxious to get going to the next geyser collection. After all, we did see quite a few on the ranger walk. Norris and Artists Paintpots were dropped from our itinerary until next time, but did take a stroll around the Prismatic Spring. Then we headed to Grant Village to check in and shop for souvenirs. We strolled down to the lake where our kids loved wading in the water. I found this odd, as we live in Hawaii and Waikiki isn’t quite as chilly. 
Dinner was at the Lake House, then we walked it off taking a lap around West Thumb. The kids got to see their boiling mud pit, so maybe Mud Volcano could be dropped until next time. The kids were sick of smelling sulphur, to the point where they’d run away from the steam, so I’d say they smelled enough. Back to Grant Village for the night.
One thing I’d like to add: we never felt rushed. We took the kids’ pace and never felt like we had to dash to the car for the next thing. Even the weather was cooperative, we only got rain as we headed back to the car at West Thumb.
The next morning, we got up early and drove north through Hayden Valley. We left Grant at 6:30am and were the only car on the road. Now, up until this point on our road trip, I hadn’t seen any buffalo in ID, MT, WY, SD, or NE. I was getting a tad anxious, as I really wanted to see one. Then I spotted a bison eating at a picnic area near the lake. Pulled in and got my pictures!! Feeling my bucket list checked, I saw a car was stopped in front of me. A bison was walking down the road, nearly scraping my mirror as it sauntered past. Wow! Two in one day!
Then we got to the area past Mud Volcano, and the road was filled with buffalo! Walking up and down the hills, across the road, by our car, everywhere. Must’ve been 3-4 dozen, including calves. There were only a couple cars around us, so we stuck around watching these majestic beasts.
We got up to Artists Point, just in time as a Chinese tour bus was leaving. It was maybe 9:00am, so the cloudless sun was shining right into the canyon and waterfalls. Then we went to the brink of the Upper Falls, and we saw another buffalo in the parking median. As I started tip-toeing to shoot it, we saw another animal digging. A BEAR! Okay, I’ll stay where I am. The bear got up, then sauntered down the parking lot, ignoring us.
Breakfast at Canyon and they turned in their books and got their Junior Ranger patches. Viewed the Roaring Mountain, strolled along the Lower Terraces at Mammoth Springs, took the obligatory “Welcome to Yellowstone” sign picture and called it a day. Got back to Spokane around 6:30pm.
So, that was my quick Yellowstone report! I have quite few pictures to sort through on my big SLR camera (which I’ll link soon), but I wanted to thank everyone for their advice.