Training and Orientation for Major Sport Event Volunteers in Countries with Low Developed Volunteer Culture

How critical is comprehensive training and continuous support for volunteers, especially in countries with an underdeveloped volunteer culture, to ensure the success of major sporting events?

Given the experiences from the Kazan 2013 World Summer Universiade and Tbilisi 2015 European Youth Olympic Festival, what best practices and strategies can organizers adopt to address challenges and optimize volunteer contributions in major sports events?