Market competitive advantage is a key factor in the success of any catering facility. Having an advantige means achieving a better position and business result than other competitors. To maintain a competitive advantige, the importance of quality and value of products and services is emphasized, as well as retaining existing and attracting new potential consumers. An advantige that cannot be taken over or broadcast, even over a long period of time, is called a sustainable competitive advantage. The development of the wine-growing regions of the Republic of Croatia is represented by the areas of viticulture. The knowledge about wines as well as their consumption is becoming an increasingly important lifestyle of people in the Republic of Croatia. In the past ten years, wine tourism has become an increasigly popular form of tourism that has very significant potential. As a unique product, wine tourism occupies an increasigly important position in the tourist offer of numerous destinations, and thus the subregions of Moslavina. In this final paper, through five important parts, the concept of sustainable competitive advantage will be explained on the example of wine tourism as the main segment of the Croatian tourist offer. In the practical part of the catering facility „Klet Romić“ will be presented sustainable competitive advantages over other winaries in Moslavina. Through the conducted VRIO test, we concluded that there is a competitive advantage in Klet Romić compared to other wineries due to its long-term successful business and long family tradition.