You're not leaving stuff constantly, just a time or two through out the cruise. However, if you have 5-10 families participating then you could end up with a few cool and exciting things to brighten your trip. Logically you would be by your door at least 3 times (leave, come to freshen up before dinner, and return for bed) Think if you came back to freshen up and someone from Ohio like myself left you a few homemade buckeye treats for you to enjoy, or in the morning before your first shore excursion someone made you a personalized water bottle or left a mini care package with hand sanitizers, Band-Aids, and a pack of advil, or maybe when you return at the end of the night someone left you a few breath mints. ;)
Even without kids I would want to participate. :) it can be an icebreaker and a way to meet an remember new people.