The was it works is Robb gets strapped into a chair, and the instructors ski him down the mountain. On the first try, Robb was extremely suspicious. He had to be forced into the chair, and he was less than amused when his chair had to dip forward to put him onto the ski lift. Just imagine, my mother telling the people to go quickly so that Robb can understand what is going on while Robb yells and hits his head. The people pushing Robb believed that he would never be able to enjoy it, and I have to admire my parents for convincing them to try the activity again despite the failure.
Fortunately, when he went back for his second session, he was very pleased and excited for the ride. He never seemed quite comfortable with the ski lift, but once on the mountain, he laughed the whole way down. He even started to put on the goggles himself to keep his face warm despite his notorious dislike of things covering his face. (He has thrown more than a few pairs of glasses out of the window of a moving car.) At the end, despite initial concern from the people pushing him, at the end they said he kept on signing "more" the entire trip whenever they asked how he liked it. All and all it was really an amazing program, and I would say that seeing Robb with a big smile on his face coming down the mountain was the highlight of everyone's trip.