Sure, you can pull it off, but it depends a lot on your food choices and whether dehydration was done properly. Most dehydrated food doesn't really spoil, but it gets harder and difficult to rehydrate. Plus, the flavor will go bland. Probably vitamins and things will degrade. But, hey, for 6-7 days, it doesn't matter too much.
One of my recipes works great unless I fail to dehydrate it fully. Then it grows tiny little fuzzy things. Some of that I can flick off with a knife point. Some of it is waste.