Only parts of the park roads are open. I think the northern most roads are open. If you're going after the 18th of April, almost half of the park will be open.
https://www.nps.gov/.../parkroads.htm
That said, I'd ask the rangers. You can certainly pull off into a parking area. I can tell you one we stopped at: Wraith falls trailhead. It's not much, but it has decent views, meaning no huge mountains blocking half your view. Google has a street view of it. We hiked to the falls, and I'm sure there are many other areas, but that one seems decent from my notes and memory.
I can tell you a few other things. The road from Madison to the west entrance is in a valley, so you'll get views east and west only. Between Madison and Old Faithful, there are probably some good spots, as there are flat and wide open areas, but you'll have to be careful as there are lots of hots springs and geothermal features, but if you arrive before dark and use common sense, it shouldn't be a problem. There are areas to stop and park, but only open after April 18th.
You can only camp in the designated camping areas. You'll have to figure out lodging before hand. The park gets incredibly busy in summer, I imagine less so in April, but still, you can't just camp anywhere. So you'll want an observing spot close to your lodging I suspect.
The park is mind-bogglingly large and mountainous. Larger than the state of Rhode Island.
Edited by harbinjer, 11 February 2025 - 09:59 AM.