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<p>That would be difficult to pull off, since 18 y/o are legally entitled to purchase alcohol in Mexico. Unless the parents are going to be watching their every move 24/7, there’s a good chance an 18 y/o will have a drink in Mexico.</p>
<p>And to be realistic, a person’s drink can be drugged even it’s not an alcoholic one. Conversations about setting down a drink or making sure to see the drink being poured are essential no matter where the child goes, whether it be on vacation or anywhere else.</p>