We have never found a way to get both of our kids to bed at an early enough hour to just enjoy some time together without losing sleep :-)
We usually stay up late one night and then give each other some extra sleep on the weekends.
Our older son does not nap and goes to bed around 8:00 pm. Our younger son takes a long nap (and is a complete crab if we wake him early), and does not go to bed as early. Once we get him to bed, we have some time together. Sometimes we go straight to bed because, let's be honest, sometimes we're exhausted. Sometimes we stay up and spend time together. We're tired the next day, but it sure does make us feel closer.
It's tough! I know many moms who have all school age kids, and they are always telling me that it does, in fact, get easier!
Hang in there! That's what I'm doing :-)