This week's episode was the first that made me think the set production people weren't really trying. The diner, the back hallways, etc. of the amusement park didn't at all look like they'd been unmaintained for fifteen years. Scattering around random debris and not smashing any windows does not make it look abandoned. Ditto for any bodies of water - this is a northern state, no? ANY pool left unmaintained for a couple winters would have cracked and drained long since.
Last week, my wife was noticing how they also seemed happy with wrapping vines around stuff to disguise the fact it hasn't aged or rusted. I recognize that there's only so much you can do on any TV budget, but I think there should be better care given to their location dressing.