It is feasible to prepare your journey beforehand, but it is normally much less expensive to reach in town that serves being a gateway to the area (for Pacaya Samiria, it was Iquitos) and try to find the tour around the place. The Tambopata Study Center can be a spartan https://puertomaldonadotours.com/tour/adventure-peru-amazon-tours-sandoval-lake-4-days/