Members of unlicensed hiking tours were among the hundreds of visitors who packed into Hong Kong’s Ham Tin Wan campsite on the second of mainland China’s Labour Day “golden week” break.The sink at the scenic Sai Kung hotspot’s only public bathroom was left clogged by food scraps after some visitors opted for hotpot, among other options.On Saturday evening, a South China Morning Post reporter estimated there were about 500 tents at the campsite.According to the Agriculture, Fisheries and...