I recently completed the Green Program's Iceland course and have never had a more enjoyable experience in my life. The local guides that joined us on our trip were extremely knowledgeable, designed really unique excursions I wouldn't have had if I visited Iceland on my own (A highlight was visiting a mountain and cave near one of our guide's hometowns that I never would have known existed), and were still very flexible with letting us decide what we wanted to do. Additionally, the graduate student helping us for the learning aspects of the program was super friendly, helpful, and never was unable to answer one of our technical or scientific questions. While the experience had relatively no cons for me, some of the things I loved may not be for other people. For example, our days were always packed with very little time to rest or relax. Also, the excursions we went on were somewhat physically demanding, and we would often hike or walk through extreme weather for many hours a day. I loved these aspects of the program, but understand that might not be for everyone. Also, I met some incredible friends while on the trip, but this is a sustainability-focused program, so if you are not interested in the environmental aspect of the program, you will feel out of place.