Before crowd-control barriers and permanent police surveillance were put in place in 2004, the site abounded in illegal drug use and drunkenness as a way to celebrate and honor Morrison’s commitment to living life on the edge. Many fans describe him as a shaman.
Direct body contact with the site was important for some, with women lying naked and couples engaging in sexual sessions on the grave.
Now many of these celebrations of the senses have moved to a café next to the cemetery, and the gravesite is visited only for silent contemplation.
This according to “The performance of a cult of the senses: A feast of fans at Jim Morrison’s grave in Paris” by Peter Jan Margry (Traditiones: Zbornik Inštituta za Slovensko Narodopisje/Acta Instituti Ethnographiae Slovenorum XXXVI/1  pp. 141–152).