This paper studies the first computing education summer camp of its kind in Sweden. Semi-structured interviews were performed with six of the camp's instructors focusing on their teaching experiences in relation to the instructional content and the children. The instructors struggled with meeting the wide range in children's programming experience, suggesting a lack of pedagogical knowledge. The results also shed some light on the challenges and advantages related to recruitment, content, and teaching strategy. Awareness of the camp instructors' experiences enables computing instructors, in both formal and informal settings, to enhance the design of learning environments for children.