Conditions may get a little primitive as you leave the towns. Take careful note of any seasonal rains, macaws don't like the rain. Unsealed roads are often impassable after rain. The most expensive part of the trip will be the air fare. When you arrive in most South American countries you will be rich.
Hard currencies go a long long way.
This means someone is attempting to control the economy. There are lots of poor people. This means ninety nine percent of the population are very poor by first world standards. There are lots of desperately poor people. Then there is French Guiana which the French consider to be France.