In 2006, my wife and I hiked the Appalachian Trail. finding good canned beer was nonexistant in those days, so we'd split a liter of vodka. Every evening on the trail we had a cocktail of 4oz vodka and crystal light. at first others laughed at us sitting there with "our little hiker-trash drinks". But after over a thousand miles and into PA they weren't laughing so hard. 2,175 miles took us 182 days. There were only 4 nights I didnt have a bev, only because i was too exhausted to do so, or we rolled into town where the beers flowed freely. One HAS to reward one's self after walking all day.
I have since modified. I found a vodka that comes in aluminum bottles (Kru). I bought some 1.75s, drank the vodka, and now we fill them with whatever I have on tap. If you're just going for an overnight-er they are perfect.
I wish i had bought a couple cases of Bud Lite when it was in the aluminum bottles; those would've been perfect for backpack or on a boat.
Pack it in, pee it out.