In October 2019, the worsening political, economic, and perceived corruption in Lebanon led to civil unrest. In anticipation of injuries, a group of healthcare professionals and social activists summoned paramedics, nurses, and physicians through social media, to provide medical assistance in the protest area. These volunteers established a physician-led advanced first-aid tent, whose aim was to reduce the patient load on Emergency Departments in local hospitals. We present the experience of volunteers, lessons learned, and challenges faced during the establishment of the physician-led first aid tent. In this manuscript, we discuss the following aspects of our efforts that can serve as relevant lessons we learned about medical volunteerism: spontaneity in volunteerism, operations, location and storage, supplies, roaming team, coordination with emergency services, safety, documentation, communication, special situations, and transition from acute to primary care.