catman, Rob Burnett is an environmentalist. The show is actually very responsible with the environment. And it is all show on resort property (or very near to it). Remember that the crews have to stay in a hotel with generators to recharge batteries for their cameras, running water to wash, etc etc. (and when the actors get eliminated, they go back to their room in the resort).
Survivor australia wasn't near a resort, but they probably staged the crews at a large station to provide the services needed to run the show.
The show brings in a lot of money to the local economy.