reading all sorts of things about how crowded it is and how long the wait is just to get into the park. We were hoping we could just drive through the park basically and stop and look occasionally. Can we not do that?
When we went to Yosemite in 2022, the "Timed Entry" checkpoint was like crossing into a foreign country. Once through the entrance, we stopped at the Ranger station for information and maps. I asked the Ranger manning the information booth, "What highlights should I focus on spending 1 or 2 days in the park?" he replied, "If you can get into the valley, you'll be lucky to find a parking spot," and that was all the information he provided. Next.....
Like most replies, our daily mileage varied. When planning a trip, I never drill down to every fuel stop, pee stop, attraction stop, as some travelers do. Going cross-country, I would make reservations near very popular attractions, while leaving plenty of days to free lance along the route. Some days we would travel less than 200 miles, others we would hit 500 or more. Many days, the mileage was dependent on where we were stopping for the night. Quick overnights at Walmarts or Harvest Hosts generally have shorter distance days of 200-300 miles. Destination multi-night stops, I seemed to drive longer, 400-500 miles to "get there".
On our most recent trip this Spring, our drive days were getting shorter, 6 hours at most, because my wife couldn't sit any longer with discomfort in her butt.
My advice to the OP is not to try to overplan your stops or overthink your travel. Mix it up, enjoy the ride, and the beautiful country you'll be driving through. Drive as long as you feel good, stop when you feel like it, stay as long as your time frame permits.