There was a YMCA camp and I went up 2 years in a row. The second year I was in an advanced group consisting of 6 teenagers and 2 councilors. We spent the first night at the Y camp and left the next morning on an extended canoe trip. We got back 2 weeks later about 2 hours before the bus left for home. It was fantastic.

edit; it was 40 not 30. Time flies when you're having fun...