We're DVC'ers also (like many who've already posted). We go for 6-8 days each trip - sometimes driving, sometimes flying. Our kids are older (6 & 11) so there's not much chance for accidents. We usually have enough clothes for half of the trip (3 or 4 days). Neither of us (KAMommy or I) really want to do laundry on our vacation - so here's what we do...
Each night when we're back at the suite we will wash one type (whites, darks, etc.) and get them into the dryer. In the morning while we're getting ready we'll pop that dryer load for some more time so that everything'd dry. Depending on when towel & trash day falls, we sometimes will put a load of towels in the washer in the morning, and put them in the dryer while we're out & about. This system works for us, since we're not having to fold & sort massive piles, and we're making headway toward not having so much to do when we get home.