Like Paul, I let my son help around the brewery, especially with capping bottles, once he became old enough (mid-teens). He tried beer as a high school student, but was in 3 sports, so he had a no-drinking pledge for participation and he honored that. He still drinks only moderately, so I tend to think that some of being around beer while he was growing up, went towards it being less of a sinful taboo and therefore not a big deal.
Everyone can try their own style of influencing behavior, but for my kids, my disappointment was something that they didn't want to see, so they played things pretty straight. Maybe I just got lucky. Regardless, good luck with the kegerator security plan - disconnecting hoses seems to be the easiest approach!