This may be stating the obvious but a Summer Ski Camp is going to be very "form" technique intensive out of necessity. You'll have 2 ski conditions - hardpack and slush (the window for corn is about 20 minutes) The terrain you get is the Palmer, and just a lane on it (about 50yds wide, full length of upper Palmer) - there's a public park, but Windell's and HCSC have the big parks to themselves - magic mile will almost definitely be a canyon for the july camp, possibly the june camp - and lower palmer won't be much better.
That said the Summer Ski scene is very cool - skiiers from all over the world & country (national teams are there May June), Government Camp is alive, the Gorge is awesome, and where else can you ever see sober teenagers excited to be up at 6:15 in the morning on a summer weekend?