Brazilian Portuguese can be tricky for foreigners to master, and local dialects make communication still more complex. But efforts to communicate in Portuguese will be warmly appreciated, and mastering even a few basic phrases will enhance your trip. Note that Brazilians don’t take kindly to visitors trying to communicate with them in Spanish!
One thing to remember is that, due to masculine and feminine nouns and adjectives, some words differ according to whether the person speaking is male or female. For example, a male speaker wishing to thank somebody would say ‘obrigado’, and a female speaker would say ‘obrigada’.
The importance of the preservation of the rainforest only truly becomes meaningful if it speaks to your personal experience.
Stick to the international Leave No Trace principles to minimise your environmental impact.
Expectations are often very different from the reality.