I'm taking my girlfriend and her 5 year old out with me next weekend so I'm trying to pick up supplies as cheaply as possible in case they hate it...

As we will be backpacking part of the AT, I'm trying to avoid carrying Walmart tarps basically. Trying to find lighter but also cheap alternatives.

Vermont's Barre has several sizes of Eureka's Floor Saver tent footprints on closeout. Does anyone have any experience with them? Would they work for a weekend hang for at least two nights?

This is what I'm looking at -