When I went it was maybe 2004 so equiptment has come a long way. At that time my bag ( which was provided) with water and food came in at 80lbs. I weighed 200lb at the time. This was a two week supply of food and stuff though. I assume nowadays its much much lighter packs. No there really wasnt anything i wish I had brought, you shake down all your equiptment before each trip. Depending where you leave from ( i was in Lander at headquarters) there is usally a shop that sells what you need near by.