Do you make it later? Mine usually go to bed 7.15-7.30pm school nights. I don't usually make it much later on Fri/Sat (maybe 7.30-7.45pm) simply because they are exhausted from kinder/school on Friday and then Saturday they are tired after swimming and usual play.
Others think we are odd for not keeping them up until at least 8.30pm/9pm.
What do you think?