The don't take Amex so keep that in mind!
We always bring laundry pods and dryer sheets.
The default dryer time is a bit long (they run HOT so keep an eye on your clothes!). You can change the time of the dryer, and it adjusts the cost slightly. I don't dry things for very long, and bring extra metal dry cleaning hangers from home, so I can hang up a lot to dry without so much wrinkling.
I do laundry every 2 or 3 days at Disney, so we pack light (and things get sweaty so we sometimes go through 2 shirts a day).