Sunglasses are a must for me. In summer I like light coloured Bermuda shorts in a light fabric, and sleeveless or short sleeve loose light tops. Light coloured. I tend to wear flip flops with support. Either Sole, Birks, Teva, Clarks, and Eddie Bauer has some decent ones too. For pool or water park I wear a cheap pair of flip flops. Don't want $60+ flip flops stolen. I hate wearing shoes & socks in summer, esp with freq rain and walking around with wet soggy socks & shoes.
I like small crossbody purses like Lesportsac, Vera, etc. all I carry is my camera, and small zipper pouch for Gift card, ID, and a few dollars, lip gloss, and cell phone.
Not a hat person, it seems they just make my head feel hot. But I have blond hair. My dad who has dark hair wears a white WDW baseball type hat.