Sounds like a great trip. Brazil sounds like a great location. Where will you be staying?Diving has become very popular there. Hope you post some pictures.
As for me, I'm a divemaster. I've been diving over 30 years. I dive a lot locally in Southern California. I've lived overseas and have dove a lot in the Indo/Pacific. Some of the places I've dove include; NYC, Florida (all over) the Caribbean, Mexico, Hawaii, Japan, Philippines, Malaysia, Vietnam, Thailand, Indonesia, Fiji, Australia, New Zealand, Mauritius, Red Sea and East Africa.