It's certainly possible to go to a musical festival and take in the performances while consuming the substance(s) of your choice responsibly and having a genuinely enjoyable time, and it's just as possible to experience the exact opposite.
Links
[1] https://www.elitedaily.com/humor/people-thought-handle-music-festival-lost-photos/1077309
[2] http://rethinkpot.org/tags/molly
[3] http://rethinkpot.org/tags/music-festival