Don't forget to put up your spiritual protection--re-engage the armor of God, shield of faith, and sword of the spirit. You are about to leave your fortified environment and enter into the world. Don't go unprepared.
When you get home spiritually cleanse yourselves, anything you received from others and rebuke any evil that would try to cling to you and make it's way into your home.
This is good advice. After my husband spent a night at a buddy's house, he came home in a foul mood that got progressively worse over the next 3 days. He brought something evil home. After engaging in the steps above, problem was solved.