I don’t use drugs nor alcohol, but I just turned 18 and I noticed that a lot of people younger than me (high school age so 14-17 even) use alcohol and sometimes drugs from siblings, older friends, etc.
Did you do that when you were younger than me? I don’t plan on doing so anyway.
I started buying my own beer at 15. I had a streak of grey in my hair, which helped.
That was… long enough ago that photo ID wasn’t an issue.