I´ve been to Kea in summer a couple of years ago. Bring a panorama if you have, wide angle, telephoto and maybe an underwater camera if
you have one. POLARIZER! When you shoot film, bring b/w and red filter.
Classic HCB Shooting possible!
Food? Superb, try all seafood!
The bad? A lot of tourists, very loud in the night!
The ugly? Litter, when you swim - watch out from which direction the
wind blows - you may end up swimming around garbage and much worse...