My second cousin got to know many Venezuelans while living in South Florida. He said what they tell him is that things are really bad in Venezuela, but that the wealthy Venezuelans are still living pretty well.
Still, I have seen that occasionally the Venezuelan government will bar its citizens from leaving the country, since many go to nearby Colombia where there is food to buy.
I would expect that Colombia would be the primary country for refugees leaving Venezuela. The Brazilian border is in the Amazon basin, not so near population centers.
I noticed a comment about poverty in the Caribbean. Poverty depends entirely on what country or island. Aruba is relatively prosperous, as is Barbados, Antigua, St. Martin and the Virgin Islands. On the other end of the spectrum are Haiti and Jamaica.