Port Douglas has very open beaches , crocs as a rule are pretty shy creatures that prefer a bit of mangrove area , finding one on a beach around people is a very rare event . You should be fine going for a kite . There are things to be aware of though in croc country , stay clear of river mouths where there is a lot of mangroves , stay away from creek banks during half light (dawn/dusk ) and if you are camping , camp away from saltwater rivers / creeks , and dispose of any food stuffs / fish / bait etc well away from camp area , and ask for local knowledge as any resident crocs are usually well known . Happy holiday !