My middle two teens work a few hours each morning at the local playground so are on that routine. Come the weekend they will likely get up late. They also take naps at random times of the day or just lay in bed reading or binge watching Netflix. Oldest kid is 20 and has different hours every day so he sleeps and gets up when he needs to. Youngest (13) sleeps late and goes to bed late. If we hear him still up past 10 or 11, we say something. His job is whatever hubby (teacher) has him helping out with around the house. While I try to at least know what they are up to, I'm not micromanaging. We've entered this new realm where summer weekend nights (and some week days too) are just hubby, DS 13 and me. Sometimes it feels like a bummer, but if the kids were constantly around that would probably be concerning. These last two nights, we somehow had all six of us at the dinner table (at the same time!). It didn't last long. Before we knew it, oldest two were off.