Your bag must keep you warm if it gets wet. Air temperatures are about 10 degrees F cooler near the glaciers. Treated water is only available at Bartlett Cove. A bladder type water container works best for large storage. Food should be compact and high energy.
Dehydrated foods work best.
They are available commercially or you can prepare your own. Plan and prepare your meals. Pre-packing food in meal amounts saves time and wasted packaging. Extra food should be considered for emergencies, excessive amounts will have to be left behind. Don't forget to bring some treats.