Mass tourism is a form of tourism that involves tens of thousands of people going to the same resort often at the same time of year. It is the most popular form of tourism as it is often the cheapest way to holiday, and is often sold as a PACKAGE DEAL. Mass tourism refers to the movement of a large number of organized tourists to popular holiday destinations for recreational purposes. It is a phenomenon which is characterized by the use of standardized package products and mass consumption. Conceptually, this type of tourism features standardized leisure products and experiences packaged for mass tourists. Tourism is travel for pleasure or business; also the theory and practice of touring, the business of attracting, accommodating, and entertaining tourists, and the business of operating tours. The World Tourism Organization defines tourism more generally, in terms which go "beyond the common perception of tourism as being limited to holiday activity only", as people "traveling to and staying in places outside their usual environment for not more than one consecutive year for leisure and not less than 24 hours, business and other purposes".Tourism can be domestic (within the traveller's own country) or international, and international tourism has both incoming and outgoing implications on a country's balance of payments.