#1 Watch where Marius steps then step there also, the thorns are nasty. Thorns have thorns, the water has thorns and the air has thorns!! Take a pair of tweezers and some anti-septic, leather gloves (I used mechanics gloves)
Wool? Yup July in SA is winter time, I had beautiful weather but I did wear a wool sweater under my jacket some mornings. Don't forget the gloves and watch cap also. The fleece ones at cabelas or bass pro are PERFECT, I left mine with Lloyd for riding in the back of the truck.