MJCC Summer Day Camp Brochure. Register now for a fantastic summer of activities including sports, arts, crafts, rock wall climbing, swimming and more! We are proud to be one of the few traditional day camps in Portland providing quality programs that are age-appropriate, fun and safe. We offer our classic camp program and week-long specialty camps including gymnastics, kayaking, cooking, soccer, movie making, chess and more! Camps run in one-week, full-day or half-day sessions. Ages: 3 years - 8th grade. Dates: June 18 - Aug. 31; 9am-4pm Precare and Aftercare available 7:30 am and 6:00 pm. Registration opens March 11. Open to Everyone!