I was at Cottesloe beach with a friend once and she was telling me how she spotted people from her own country (she was not from Australia). Her technique consisted in observing their footwear. Apparently, if they were wearing Birkenstocks with socks, they were from her country. By sheer luck, I saw a small group of people sitting on the sand. They had a thermos flask and a container approximately the size of a mug but with a more round shape, with a drinking straw in it. I