Our evening routine is pretty laid back. I don't tend to be too strict on anything, but it varies all the time and sometimes ends up total chaos and I feel out of control when that happens, so I try to sort of keep it in check. DD9 has netball training on Tuesdays until 5pm, so that means that she is usually super tired and hungry when she gets home, so its an early dinner night for her. Most nights we will try to eat by 6.30pm, but DH sometimes works until 8pm, so on those nights he will eat later when he gets home. The older girls usually are doing something, the eldest is usually working night shifts, so she usually starts at 9pm, so I make sure that she has a snack or something to have on her break.
Sometimes I have to work late too, so some nights I don't get home until late, so the older girls will take over. DD9 is in bed by 8.30 and then its time for us to relax or tidy up.