After hammock and tarp are set up, I don't have much of a routine. I eat when I'm hungry; have a warm beverage if I'm cold. Sometimes I hike with a very routine-oriented person who says, "dinner time!" expecting that I will eat when he does. Or he'll say, "let's go to bed" as if I should adapt his routine. My wife is also very routine-oriented. She goes to bed every night at 9:00 pm, and wakes up at every morning at 5:30 am. Dinner is served exactly at 6 pm. Routines are important to her.
I, on the other hand, would never of dream of eating at a certain hour if I wasn't hungry, or going to bed if I wasn't sleepy. We have three kids and guess who they all take after? Much to my wife's chagrin, they take after me. When she says, "it's time for dinner!" all three kids kind of look at her like she's crazy and say, "Why should I have to eat if I'm not hungry?" Sometimes I think it's a genetic thing - they inherited my lack of routine. We're all like Forrest Gump: "When I got tired, I slept. When I got hungry, I ate. When I had to go, you know, I went."
Gathering firewood and making a fire was an essential part of any hiking/camping trip for over 40 years, but I can't even remember the last time I made a fire - too much work.