Well, I fold my clothes neatly when I pack! Do you guys just ball up your clothes or something?! LOL
I wear very casual clothes at WDW, like tshirts, shorts, capris, tank tops, polo shirts, sweatshirts if it gets cold, jeans, etc. The same kinds of clothes I keep in drawers at home, and they don't get overly wrinkled at home or in a suitcase. None of these kinds of clothes would need to be ironed. (although there is one in the room, if I needed it I guess) I do hang up the one or two shirts or dresses I might bring to wear out to Jiko or Narcosees or something, but usually only just before, maybe in the morning or in the bathroom while I shower. I find wrinkles fall out anyway from the heat of your body after you wear an item for oh, maybe a half an hour. Try it, it works, I swear! I may not look perfectly crisp or have lines in my jeans, lol, but I do look clean and unrumpled, I promise. Who irons or hangs tshirts anyway?!