I only travel with worn jeans. I wear worn jeans, sneaks and a button down shirt when I'm at any nice restaurant in the U.S. (Having been to all in AC, including Ballly's Steak House, and many in LV.) Slacks and shoes are something I only bring when traveling in Europe. I wear scrubs at work (they're like pajamas) and only own 1 suit for funerals and weddings (I hate dressing up).
Stu