My 9yr old dd1 goes up and runs the bath and when she calls that she's ready, dd2 who's 7 goes up to join her. They clean their teeth and then have a jolly old splash about in the bath. It's often quite hard to persuade dd2 to get out. Afterwards they PJ themselves and get into bed and call me up to read them a story. Oh, almost forgot, they also throw 2 hotties over the landing to dh to microwave for them. He comes up to say goodnight and then we finish our chapter. After that I give them a time that they can read in bed until and then it's lights out (which they do themselves). Personally, I love reading to them last thing at night and hope it continues for some time yet.