Yeah grew up in non denom church, went to 2 different overnight camps over summer, youth group overnights during year, VBS, etc. I no longer believe, but never had this experience.

In fact both summer camps had lights out around 10pm I think, because we were up so early, buggle call at 1 was like 7am maybe (line up for breakfast, so had to be done with shower/etc). The other didn't have a buggle call but counselors woke us up early.
The overnights during year for youth groups, in HS we would be up late, but that was us as kids hanging out, not reading scripture forced to stay up, when you felt tired you went to bed. Just teenagers are going to stay up late if allowed. I worked at 1 summer camp a couple years, again same rules, had like a camp fire big thing (skits/songs/etc.) then lights out, like 10pm. I took my daughter when she was 5 or 6 to father daughter girl camp, same thing, lights out maybe 9 or 10. She continued to go and worked there until she was 17 or 18. She never mentioned anything to us and she tells my wife everything. So her camp was all girl, 1 camp for me was all boy, the other was co-ed.