The paper is based on a qualitative methodology that includes a theoretical review of the literature related to tourism consumption in Croatia and Greece.The aim of this paper was to present tourism consumption in Croatia and Greece, two Mediterranean countries whose GDP and economy depend heavily on tourism. It was shown how active and adventure tourism can affect the increase of tourist consumption and what are its advantages and disadvantages for development in Croatia. The first part of the paper states the concept and impact of tourism in the Croatian economy. The second part of the paper defines the concept of tourist consumption, as well as its characteristics. The third part of the paper describes the tourist consumption in Croatia, and the fourth part the tourist consumption in Greece. The fifth part states the similarities and differences in the tourist consumption of Croatia and Greece, and the last sixth presents a proposal to increase the tourist consumption of Croatia in the future. Croatia is one of the most visited tourist destinations, as is Greece, which also abounds in the beauty of the landscape and cultural sights. Croatia has a significantly higher number of tourist arrivals than Greece, but revenues from tourism and tourist spending are significantly lower compared to Greece. Tourist spending from international and domestic travel is also lower in Croatia than in Greece, as is spending from business travel and leisure travel. All of the above point to the confirmation of the hypothesis set at the beginning of the paper, Croatia has a higher number of tourist arrivals than Greece, but has significantly lower revenues from tourism and significantly lower tourist consumption. The paper presents the proposal of the project "Green Croatia - Activities in nature" which aims to offer different pedestrian, bicycle and motorway routes to combine different sports activities with natural and cultural wealth. The emphasis is on determining tourist destinations that are suitable for various forms of active and adventure tourism, marking roads, building infrastructure in accordance with the law, developing ecotourism and educating experts who will contribute to the sustainability of this form of sports tourism.