You can run drains out the side of the structure without drilling holes in the floor, same with electric, and even if by some insanity we say "whutabout the holes in the side" then you could even use a damn lift pump/macerator pump to pump it up and out through where a window was. For vents you can also use AAV instead of a traditional vent. If the residences are at the edges they should be able to pop right out and worse case you elevate the floor in the bathroom/kitchen under the plumbing appliances for the slope on the pipe as it exits. A vertical drain pipe isn't going to freeze (and even if it were, could be insulated and heated), and supply lines are such small holes as to not threaten structural integrity.