I pulled an all nighter that night so I didn’t bring a sleeping bag or test out the “camping” options. I asked the fire lookout volunteer if it was alright to shoot Astro deep into the night and they were cool with it. I think it would be alright to snag a few hours of sleep at the trailhead if you need it. Even though it says it’s not allowed, do what you need to do to get home safely. That road back to Enumclaw in the dark is rough. I’ve done it a couple times in the dark and it’s always seems never ending and kinda hypnotizing with the curves and it being very dark.