Looks like a fantastic time for everyone. My kids are now 14 (daughter) and 13 (son) and have been camping since before my son was born. Each year for a long time I took them camping for several days just before school started. When they were about 8 & 9, we backpacked for 3 days in the Adirondacks High Peaks region. Packing my gear, communal gear and some of their gear opened my eyes to light weight backpacking. Last year we did 4 days backpacking in Yosemite and they loved it. Luckily they still hang out with me some.
By the way, my son first suggested hammocks after his counselors at camp had ENOs.