The Symposium from the Lincoln Mystery Plays also suggests ways to involve younger members of the community:
Contact groups such as Youth, Sports, Drama and Dance clubs at local schools and universities. You can involve a range of different communities and clubs, not necessarily just drama groups. Being involved with local community drama such as passion plays and mystery plays can give young people unique experience. It can help them acquire and develop new skills, and also give the something new to write on their CV.
To attract people to your event, take over a public space with easy access for transport/parking. And fill it with noise, fun, colour, expectation, people dressed in costume, strolling performance, free handouts. People are curious and they will stop to see! Advertise it well and make it FREE!
Are there any local celebrities or personalities who could support your event? Contact local radio stations, theatres and community groups to promote and market your event.