I have two places to put a raised bed, one is bigger but without a drip-irrigation system, and the other has the system, but is smaller. I'd obviously like to make a bigger one, but I'm worried about them getting enough water. My family goes on a lot of 2-3 day vacations, and maybe one or two longer ones. Would I have to worry about neighbors helping me, or would they last a couple days? If it matters I will be using 40% shade cloth too