Actually, I don't think much of that route segment having done it before. The Caribbean is fine, but you have probably been there, done that. Fortaleza is a waste of time. We did enjoy the time in Rio. In Winter 2018, the stop southbound was timed for Carnivale and that was quite an experience. Otherwise, Rio is a risky place to be, but can be enjoyed if careful etc. Having experienced it once, no desire to return. Now, the leg from B.A. in the other direction, I'd jump on to do that over again.