You can wear pretty much whatever you want to . . . Jeans and tees will work, or so will a snazzy dress. I would recommend skipping the high heels, unless you're really comfortable and sure footed in them. I wore heels, and regretted it. Between the stairs and trying to keep from getting knocked over, my poor feet hurt for two days afterward. But it's an awesome place, and I can't wait to go back (in FLATS)!