Don't discount the WB two-day camps. I think they are called "Elevation Camps" now and are geared toward adults. They have all ability levels and select coaches respective to your ability level. The surprise is often the coach. My wife is a strong rider and signed up for an advanced class, with a focus of wanting to work on her jumping and line selection in steep stuff. She shows up and has two days of instructing by Mason Mashon. What she learned in 2 days solidified solid bones that she still builds on now. So much so, that she has a WBP pass and I don't….
Also, someone can correct me if I"m wrong, but the Kovarik camps are private camps run on the mountain through a user agreement and therefore are not entitled to lift line priority, which could be an issue if you're paying for a private lesson on a busy Saturday. Again, I could be wrong, but I often see him and his students in the "normal" line.
My kids do a spring ski camp through a licensed private provider (Slayers), and it's the same thing. No lift line priority.