title_body: What are reasons to not sell alcohol free beer to minors?
upvoted_answer: Alcohol free beer is not non-alcoholic, it does still contain some alcohol. It often contains around about 0,5%. A beer can be called alcohol-free from 1%.
  
  To specifically respond to your situation I could not find any source saying that the Netherlands have an age restriction on alcohol-free beer. On the contrary the following sources indicate the opposite.
  
  Sources (Dutch of course):
  
  Ik ben 17 jaar, mag ik alcoholvrij bier kopen?
  
  Mogen jongeren onder de 16 alcoholvrij bier kopen?