Congratulations!!! This is a great park, great hunt and top notch park staff!!!
I went on this hunt last season with my son, the way it worked that time was, 4 to 5 kids (and accompanying adult) were assigned per compartment. After the hunt/security briefing we were taken to our compartments and drove around following our park Ranger. Once we drove all over our compartment he left it to us (parents) to decide which area we wanted to hunt. The compartments are large enough for every one to spread out safely. There were some wire blinds to which you can add branches and grass to cover, but not large enough for 2 people. I suggest you bring a popup blind or two in case your oldest can setup by himself, I'm not sure how that works. Definitely call the park, they will be able to help you and answer any questions you may have.
Here's my post from last year, hope it helps getting the answers you need:http://texashuntingforum.com/forum/ubbth...eit#Post5930200