Generation Y (Gen Y), Echo Boomers, Nexters, dot-coms, Net Gen, N.Gen, Millennium, Thumb or Paradoxical Generation, as noted elsewhere in this book, are variously classified by developed nations around the world. Given that this chapter is contextualized within an Australian setting, and specifically focuses on the youth adventure travel market within a popular Australian east coast tourism destination, Queensland's Gold Coast; we shall adopt the Australian Bureau of Statistics' (ABS, 2002) and Cooke's (2006) definition based on the following years of birth: 1980-1994 in order to distinguish Generation Y-ers. In this chapter, the terms Generation Y and Gen Y refer to the generation as a collective, while Generation Y-ers and Gen Y-ers refer to individuals in Generation Y. At the time of writing, Gen Y-ers' ages were distributed between 14 and 28 years. Given this chronological age categorization, there is some complementarity with young tourists, youth tourism segments and Gen-Y tourists. Young tourists have been described as people under 26 years of age (Bywater, 1993), 18-35 years (Kale et al., 1987), and 15-25 years of age (Aramberri, 1991). More recently, the United Nations World Tourism Organization (UNWTO, 2006) found that youth tourists tended to be categorized in two ways: 15 to 24-26 and 15-30, although in 1991, the World Tourism Organization, as a consequence of the New Delhi Declaration of Youth Tourism, framed the age as between 15 and 29 years (WTO, 1991b). Obviously, there is some ambiguity between what age categories constitute 'young' and 'youth' tourists as well as the extant interchangeable use of the terms. In addition to age ambiguity, a number of earlier writers have criticized the use of age as the only classifier for young and youth (Roberts, 1983; Aramberri, 1991; Clarke, 1992). Other considerations include sociological and psychological factors.