The aim of the project is to obtain a comprehensive understanding of how festival attendees and festival stakeholders perceive drug and alcohol related interventions implemented at music festivals. We focus on the perceptions of prevention, harm reduction, care, and law enforcement strategies and perceptions of substance use (norms) by festival attendees as well as on those by the stakeholders themselves. Besides, we intend to deliver knowledge and suggestions for prevention and harm reduction workers, caregivers, police forces, festival organizers, local authorities and other festival stakeholders to develop, implement, and/or continue the tailored prevention, harm reduction, care, and authoritative strategies.