In order to secure successful hospitality service, support its development and long-term positive results, it is necessary to create a positive business and social environment. Every hotel complex is active within an intricate system where the hotel’s interests and the surrounding environment need to be constantly coordinated. This requires a close association between hospitality services, tourist destinations, and tourist products offered at a tourist destination. Organized tourist events have been recognized as one of the fastestgrowing aspects of tourist demand; with the objective of enriching tourist offer and increasing guest satisfaction. A question arises on the role a certain tourist product, in this case a tourist event, has on the business success of hotel complexes at a tourist destination; as well as which aspect of hospitality service is the most influenced by an organized tourist event. In order to gather primary information and test hypotheses, an empirical research has been carried out on the basis of five different models of tourist events at different tourist destinations in Croatia – data pertaining to attitudes of hotel guests, hotel management as well as attitudes of county tourist board management (because they are leading representatives of destination management organizations) has been gathered and evaluated. One of the aims of this research is to determine which hotel guests visit certain types of tourist events, do these events influence their satisfaction with their hotel as well as their expenditure and which aspects of hotel business does this expenditure influence the most. Furthermore, one of the goals was to determine whether there are models of tourist events that are ideal for the success of hotel management and how modern IT technology influences the competitiveness of hospitality services and hotel management. Determining the importance of cooperation between hotel and destination management and the effects of such a collaboration was deemed an additional aim of this research. The focus of the thesis was oriented towards systemization of research results in order to create the most optimal model for successful tourist event management that will improve the status of the tourist destination as well as increase guest satisfaction and tourism expenditure. Before conducting actual empirical research, scientific and professional literature by both national and foreign authors was consulted; the result of this analysis is the systematization of all previous research on the influences of tourist events on a tourist destination and its subjects. By analyzing all available primary and secondary resources via statistical V methods of data analysis, all goals were established and all hypotheses were tested. On the basis of research result analysis, it is possible to determine that all five assumed hypotheses in this doctoral thesis are confirmed, thus proving the following statements: - Tourist events are a result of available material and human resources influenced by historic, cultural, civil, and art heritage; - A hotel complex management confirms its main goal of success; with maintaining a balance between social and business surroundings; - The economic success of a tourist destination and of a hotel complex is defined by the fulfillment of a large number of guests’ needs and motives, which in turn encourages tourism expenditure; - Economic codependence of surrounding tourist events and expected success of hotel complexes encourage joint planning, organizing, management and supervision of tourist events prearranged by destination management and hotel complex management; - By using modern IT technology it is possible to increase competitiveness of a tourist destination as well as increase success of associated hotels.