The only firm rules would be things like no drinking and driving, stealing, or other illegal activities.
It was recommended by CCA that we set a curfew, so we may start out with one on work days. But as long as you're taking good care of the girls and show we can trust you, we wouldn't keep a curfew. We would just ask you be respectful of our family trying to sleep and can be prepared for work each morning. You'd be free to come and go as you pleased, we would just want to know where you're going for your safety in case anything happened (although where we live is a pretty safe area).