We all know there's safety in numbers. If you're not an experienced night rider, in addition to making sure you have adequate light, think about also taking along a friend.
At night the chances of getting lost or of falling off are greater, and riding with others means that if something happens you will have the ability to get home. And, here's another bonus, you might even be able to get extended riding time. If not everyone in your group has their lights on at the same time the rotation lets you ride longer.