1. Don't keep your water filter packed inside your backpack
2. Speaking of the water filter, I practiced using it at home before I left. But I only practiced the part where you squeeze the water in the bag, thru the filter, into a bottle. I did NOT practice filling the bag from a "reservoir" -- At home, I just filled the bag from the tap ...DON'T DO THAT! fill up your sink enough so that you can try getting water into the bag, as if you're at a lake.
3. A spare camelbak might not be a bad idea. A leaky camelbak is a serious problem!
4. On packing up the next morning, one part I found particularly "energy draining" and time-consuming was packing up the air mattress. I'm on my hands and knees, on the ground, trying to squeeze all the air out of it and fold it up really tight in order to get it back in it's little stuff sack. Kind of an awkward and uncomfortable process. Any hints or tips on this?