DS16 went to an event in London yesterday for 16-18 year olds alongside a few friends. He returned home at midnight and reeked of alcohol. Before he left I made it very clear, don't drink or this will be the last party you go to, and yet he ignored my warning and returned home smelling very strongly of alcohol. AIBU to be very angry over this situation? When I asked him whether he been drinking and what he was drinking he initially lied but later just ignored my questions.
Is it uncommon for 16 year olds to be getting drunk at parties? How should I proceed?