Not really.
Of course I do know the Fort cabin loops have sanitary sewer lines. Manhole covers in the road, at least one pumping station along Peacock Pass (the main road through the cabin loops).
Often at a beach condo, these type of washer/dryer combos are commonly used:
The GE model I looked at uses an average of 16 gallons per load with a range of 12-24 depending. One swap might be to replace the 2nd bathroom sink out in the hallway with this top-over unit in a closet in its place.
View attachment 873615
Likely not an exact fit (width, depth) though so would take some work.
Then I know in Europe the under-the-kitchen-counter all-in-one models are popular. It uses about 20 gallons per load (interestingly, some of that is on the dryer cycle-maybe because it's ventless?).
Again, with some work, it might fit to the left of the sink in the pic below but you would give up some cabinet space. I also notice a gap between the end of the counter and the start of the Murphy bed frame that could be intruded upon to extend the counter if more width was needed to cover the top of the all-in-one.
View attachment 873613
This unit is smaller (holds less clothes) than the first unit above it. And like the first option, there's a trade-off in lost space (storage cabinet) but it could go in there maybe. But hey, with these two possibilities, a washer/dryer can be had.
So these cabins are going in without a washer/dryer and I read ya'll say every 14-15 years the cycle is to go down to the studs and redo
DVC units so that would be the first reasonable opportunity to put w/d in if the decision was made to do so.
I have a pic of the drain pipe at each cabin site which is tucked under the cabin next to the AC unit concrete pad.
I have no idea what the sizing requirements would be if the additional drained water from these machines would be considered and the ripple effect of the added flow on the sewer pumping system. That would all have to be considered. Don't really know how ya'll do laundry in the other DVC properties (machines at the end of a hallway? a big w/d room on a ground floor tucked in a corner of a building somewhere?)
Lack of a w/d is not a concern for me personally at WDW. When need be, I carry a few items and wash them (and I use multiple machines at one time if available) at the Fort (rarely more than 1X a trip). I get, though, that it might be nice to throw a pool towel in the dryer for a few minutes before returning to the pool.
Somebody smarter than me could figure it out (or already has run the numbers). And if the members/owners want (demand) w/d and will pay the bump in dues to pay for them, it might happen in the future.
Bama Ed