Well, I would say much of that depends on your son and what his likes and dislikes are. For the experience to be rewarding, you want your son to buy into the experience and look forward to it. His experience level will dictate a lot of what can be reasonably done. Even if he is excited by the survival shows out there, truth is, sleeping under a tarp in a bug zone can quickly overwhelm a young person not accustomed to such trials.
So consider a number of aspects: a) what are the shelter options, tents, primitive, other?, b) food - is it provided, are you providing it or is it crazy tough like you find it/kill it eat it, c) will he be the only kid there or are there likely others, a peer can be one of the best motivators out there, d) survival or primitive?, e) location, location, location - sometimes a new setting and new biome could be as much and adventure as near home, f) gear requirements and expectations - the aspect of outfitting yourselves might be an adventure right there; g) let him become his own man - toughest part but during the course let him learn and encourage his growth rather than doing everything, i.e. let the instructors be the instructors and your son is your peer in this matter.
Have fun and plan on many more such adventures!