They are not only informative, they will help keep you safe, and know how to handle emergencies. Many people have read about the wonders of Corcovado park on the Osa peninsula. It is a wondrous place. Don't go there alone. Even if you are an experienced outdoors person.
People die here.
Get a guide or go with a tour group. These are the most common complaints. They are not presented to dissuade you, only to inform you in order that you make honest rational decisions about your destinations. This is an exciting place, a place to feel alive and see nature at its most beautiful. It has a lure all its own.