I think most kids will love a sleepaway experience no matter what the program is. So I would take the reports of kids loving something with a grain of salt. I am not impressed with the slick and very misleading marketing the organization mentioned by the OP uses. I’d look for something more than a “conference”. Many colleges offer summer programs for high school students–classes, research opportunities, exposure to various fields, or real undergraduate courses. Have a look at what’s out there before you pay the very high fees for this.