As a subsequent phase of sustainability, responsible tourism has been emerging as a new trend among tourists to mitigate the harmful environmental effects caused by them. Any sort of tourism may be responsibly applied by being socially and culturally aware and by understanding the effect on tourist spots thereby making it a positive one. Executing proper green marketing strategies in tourist places may be a good way in helping the tourists to be responsible. This paper critically examines the green marketing practices implemented in Kerala’s tourist destinations, especially the ecotourism areas. Two tourist destinations in the Thiruvananthapuram district of Kerala, Poovar representing backwater tourism and Kovalam representing beach tourism, were selected. A convergent parallel design of data collection, carried out with the respondents(tourists), revealed that the tourists are willing to be more responsible in their leisure journey but the lack of such green practices deter them from being so, thus validating that the green marketing practices significantly affect the responsible behaviour of the tourists. They also feel that simple green practices like waste management, a pollution-free environment and improving local community will make them satisfied as a responsible tourist.