One different thought comes to mind from my experience with through-hikering, walking along the Appalachian, Pacific Crest, or any other long hiking trail. "Thru-hiking" means that you are walking for a very long time on these trails without stopping except for a rest day no more than once a week. The mind-set of a thru-hiker tends to turn to nothing but walk, eat, sleep and then do it all again. The younger ones that are college age sometimes walk as long as they can until their money runs out.
So when the money gets tight and the appetite gets overpowering, they are famous for walking into a restaurant in the "trail towns", sitting down to order a cup of coffee, Coke, or some other small item. Then when nobody is looking, or maybe even if they are looking, walk over and grab a mostly intact plate left behind by somebody that just left ! This really works good if you are at a place that has a buffet table but lets you in to order off a menu like some KFC's and .......... can't think of that other restaurant at the moment................ ok, it's Shoney's
So if cost and the challenge of making the trip worth remembering are your goals,