I went on Azafady's Lemur Venture Program in the summer of 2008. It was an AMAZING experience, which immersed me in an interesting and different culture while also allowing me to learn an incredible amount about lemur conservation work in Madagascar. I enjoyed being exposed to other volunteers from many other countries, since I'm from the U.S., while also learning some Malagasy and getting to know our local guides.
The program brings you to both the city (Fort Dauphin) and more rural areas, and I think camping was a great way to do that. (Although, it did get cold at night, even in the summer!)
Doing lemur research was incredible. I was maybe 10 feet away from some of the most endangered animals on the planet, recording feeding habits and other things. We also did botanical counts and research on the folliage.