Our church has a boys group and every year they host a big camp out (with lots of other churches I believe) for fathers and sons and anyone who is a father or a son.
So A took R last year, maybe even the year before, just for the day. This year Mr. K is big enough to go to and so A took them both overnight. Uncle G and Grandad helped out.
The boys played with their friend L. They ran around, did an obstacle course and caught bugs, got dirty. It sounded like it was wonderful boy time and they can't wait 'til next year.