Both my kids attended when they were younger. And I considering their two week programming classes for DS a few years back but he wanted to go to wilderness camp instead.
My opinion is a bit mixed. My son took the game design 'camp' (9yrs & 10 maybe?), and my daughter a graphics design. Both kids enjoyed the camp & the counselors were knowledgeable in what they were teaching and made things fun. They do give the kids breaks from the computer and they use it to play group active games to give them a change of pace. The kids had their own computer to work on during the week, and were mostly working on their own thing unless they wanted work in a group. And the other kids who attended were interested in similar things so DS got along with them.
But as a computer programmer myself, I felt a bit let down by the level of the instruction. Although I expect from the format this is a bit what the student makes of it. I felt my son didn't really get that much more from it than he could have if I'd bought him the software and allowed him to spend that much time of his computer with it. I'm probably wrong about that as many of these programs can be a bit fiddly and it's helpful to have someone to help.
But it was good enough I was willing to consider their two week programming class as a good intensive way for my son to get into programming.
It is expensive compared to half day "fun" camps in my area. But it's not that different from other equivalent type classes around here. (We live right by the camp in our area, so I'm considering day costs.. not overnight.) Keep in mind it's all day, you are playing for their equipment & software cost, much of the software they teach costs a pretty penny, cost of facilities (usually university facilities), and cost of their staff many who have at least two years in a computer science degree behind them.
I hope that is useful.
