You cannot just set out for a trek up the rock face as you would a rock-climbing lesson.
Even if the movements required are the same, the alpine environment is much harsher and more demanding. You must:
Carefully plan out
your route (up and down) using the topographical maps and guides: some climbing
routes have complex routes. Know the state of
the approach route and the descent (snow cover in early season may require
crampons and ice axe, stormy glacier, fragile bergschrund, etc…Climbing
light, does not mean climb under-equipped. Do not count merely
on there being the difficulty mentioned in the guide, and keep in mind the
length of the route and the exit altitude. Do not underestimate
the length of the approach walk. Do not underestimate
fatigue due to carrying your rucksack. In the mountains,
the rock face is not cleaned as it is on a rock-climbing face, every hold
must be systematically tested. Check how solid the points of anchorage are
as well as the relay points. Be prepared to add
your own protection on a poorly equipped route.