I. Introduction
In the globalized world, Hospitality and tourism has been well-recognized as the most vibrant industry driving the service sector. It has been acknowledged for its substantial contribution to national income and foreign exchange reserves, employment and local business, social infrastructure, removal of poverty and inequality, international relations and peace. The Manila Declaration on World Tourism of 1980 recognized its importance as "an activity essential to the life of nations because of its direct effects on the social, cultural, educational, and economic sectors of national societies, and on their international relations". It is now one of the biggest industries in the world, as international tourism receipts grew to US$1.5 Trillion in 2016, about a 10% of the employment are related to this matter and means about a 30% of the total service exports (a 7% of the grand total) [1]. Tourism definition holds not only travelling for pleasure or business; but also the theory and practice of touring, the business of attracting, accommodating, and entertaining tourists, the business of operating tours and, finally, the effect on the whole city or territory where the activity takes place (tourism destination). In recent decades, the industry has been strengthening itself by embracing a number of niche products for specific target tourist, e.g. ecology, health, adventure, rural, cruise, agriculture, tribal, sports, film, culture & heritage or meetings, incentives, conferences and exhibitions (usually denoted as MICE) tourism.