Hi Ania,
I don't have the exact answer to your question but I'm curious too. My 5th grade son was just nominated for this program and his was indeed a teacher recommendation. Both his gifted facilitator and classroom teacher speak highly of the program, although it's definitely not a gifted program per se and it's expensive. Last year's was apparently over $2000 for a week, not including airfare. DS is only 10 and we are not awash in spare cash, so I'm leaning toward "no." I did google around on it (as I'm sure you have) and I think it was the wiki entry that linked to some criticism (some incidents of poor supervision) although most of the feedback seems quite positive.
Hope this helps a little. In my mind, there are so many choices for camps/trips, it's very difficult to know which ones to choose!
-- Susannah in NM