I think they had a drug testing booth in Barcelona when I was there last summer for Sónar, and there was a massive line up of people.
Not sure what Spain's outlook on drug use is, but it was rather refreshing to see that level of education and emphasis on safety compared to what I've seen in festivals in Toronto and NYC.
From my experience in Granada it's pretty relaxed. I recall going to a Granada football game(they're in the top division), with a policeman standing on the steps next to my seat there was some guys smoking some joints right in front of us. They may as well have been drinking a beer for all the attention he was giving them.
Not sure what Spain's outlook on drug use is, but it was rather refreshing to see that level of education and emphasis on safety compared to what I've seen in festivals in Toronto and NYC.