We (or rather, I) do laundry every 3 days, but we stay in DVC accommodation which means we have our own washer and dryer. I throw a load in the washer when I get up, and move it to the dryer when I’m showered and ready. By the time everyone’s had breakfast and are getting ready to actually leave, the clothes are usually dry. Takes just a few minutes of actual “work”. I’d rather carry as little as possible than have heavy suitcases to worry about - we have a connecting flight both ways since we live on an island, so have to collect our bags and check the, again both there and back.
In OP’s situation I’d plan for laundry halfway through the trip, and just combine it with a visit to the pool. As far as I’m aware all laundry rooms are situated by the pools, so to me the effort would be minimal.