club med ski instructors - any good?

I just picked up a cracking deal at a club med resort in Wengen. A real bargain. And ski passes, all food and drinks included! great! And ski lessons are included to. Has anyone got any expereince of the lessons? Are they any good? My wife is what you might call intermediate and needs some help getting off the plateau, and I usually have a few advanced lessons off piste/moguls, technique clinics type lessons.

Will Club Med deliver? What are their lessons levels like, or should we check out the local ski schools in Wengen?