I have already commented above about my experiences backpacking with children, however, I have never had the "drunk/high perverts" situation, since I was going to remote or less-traveled areas. Sure if you show up anywhere like Bali, Indonesia in the summer, you are going to be swimming in drunk Aussies doing the same as the American Spring Break crowds in Florida, however, try making it to villages where you can find a camp site, or lodging and perhaps help out the locals with a small donation of your knowledge, time (work) or money. I've fixed well pumps or small diesel engines on rice-farming tractors (the kind the guy surfs on a board behind to flatten the previous harvest's remains before sowing the next batch).