I see groups that stay up late. Single families not so much. Myself I never have a campfire as it just doesn't interest me. I will retire by 10 or 11, but may not go to sleep for an hour or two. If I happen to be gaming I can run till 3 or 4 sometimes, but then my body pays for it over the next two days. I usually sleep in while camping as well. Breakfast for me often starts around 9 or so.