In Patagonia, weather is a character. Sunny mornings can turn to sideways rain by afternoon, so a waterproof shell, gloves, and spare socks sit at the heart of the pack. Leave cotton at home; wet cotton pushes cold into the bones.
Early starts help with wind and crowds. Keep steps short on bridges and open ridges, and never edge toward cliffs for a selfie. Respecting park rules and closed trails is the simplest way not to burden rescue teams.
Book camps or refugios before the season peaks. Patagonia asks for humble preparation, not a show of force.