Here are the relevant A and B Finals for the events:
M1x
Final A -
Final B -
LM2x
Final A -
W1x
Final A -
Final B -
LW2x
Final A -
Brazil still has all four boats in the A finals while Argentina, Chile, Paraguay and Peru have three boats in A finals.
There's a good chance Chile will qualify in one of the lightweight boats which means the men's single sculls might be decided before the race is even held. Likewise, Argentina winning both lightweight boat quotas is possible which means the women's single sculls quota would be decided. The B final in the single sculls might become a factor, but that requires Brazil (or Paraguay/Peru) to qualify in at least one lightweight boat, but right now they are favoured to qualify in the single sculls.
Bermuda making the A Final has placed them in a very good position to qualify to the Olympics.