Folks:
Here are my three cents:
1- There recently is a conscious effort to separate cubs from Scouts at camporees and other events, I think this has come about as a correction to the excessive integration of the cubs into scouting events in the past. Some of our camporees a few years ago had cubs partipating in the scouting events, I had to modify my knife shrpening demo when I realized I had 9 year olds participating! (Yes, one of the little fellows cut himself.)
2 - National does not own camps, but it does inspect and rate summer camps and has sort of certification process. Getting a good inspection is a goal for every council camp, and following the latest recommendations is a good way to succeed.
3 - Managing volunteers is a neglected and difficult art, and the camp director who chose to ignore the work you guys did on that building does so at his own peril. It is his call to use it for cub programs, but there are ways to recognize and redirect the energies of the guys who built and maintained it.
Yours in scouting
twin_wasp