Have you ever been on a campout where the Scouts, especially the younger ones insist on shinning there flashlights everywhere. Then you also know how annoying it can be as that beam of light comes in contact with your face. What I started doing is getting there Scouts, who are doing it, together around me and explain to them about night vision. I then have them all turn off there lights and close there eyes. We count to say 100. Then I have them open there eyes and look around and tell me what they can see.
Usually over a few months you have to repeat this a few times. Eventually you will be walking through camp and hear one of the Scouts explaining to a new Scout about night vision … Scouting in action!