in addition to the structured schedule, the summer camp maintains a ratio of one volunteer counselor for every two children. including all volunteers in addition to counselors, there are more adults at the camps than children. adult role models encourage positive experiences through a plethora of activities, including swimming, fishing, boating, jewelry-making and woodworking. the highlight of the summer camp is the giant birthday party with cake and gifts for all campers. the group operates 159 camps in the united states and around the world, and has about 6000 adult volunteers.