Yes, this time I exchanged my old Osprey ether back pack (4.5 lbs) to the new Osprey exos (2.5 lbs) and my pack weight without food and water went down to less than 18 lbs. The only draw back - no day pack! So planning to take the backpack to the summit. So as well sleep there! Last August I did see two sheltered (some one built rock fortresses all around smile sites north of the hut. So either there or inside the hut if there is still room. Last year I saw two fellows snoring inside! I am planning on taking 1.5ltrs water for my dinner and bkfst. Did I miss something? Thanks Steve!