//What instructions would you give your 7 year old, high up on a mountain ? //
if the diagrams in the papers are accurate, comparing this with the piste map shows it wasn't "high" on the mountain (in the general scheme) but in an area know as "the snowpark". but i digress.
if we assume the boy was a competent skier and the parents' intent was to follow at a discreet distance, then instructions could include "if you get lost, ski to the lift and wait" (most runs end at a ski lift), "if we don't arrive, wait for the ski patrol", "do not leave the marked runs". we don't know if he was told any of this.