From as early as the 1990s, volunteer vacations started appearing in travel agents, designed to cater for gap-year students and travellers who wanted to help the people they met, and yet had no experience in outreach work. Groups of young and old travel the world at their own expense ... dave aabo added these pithy words on March 29, 2010 | Permalink. For more on ?Adventure Service Tourism? check out: http://www.xolaconsulting.com/Aabo_David_Adventure_Service_Tourism.pdf ...