Hi, I come from Bonnievale - might not have the best advice, but if you can give me a general idea of where you will be fishing i might be able to help you a bit.
Might sound obvious, but as not everybody knows that part of the Breede i can tell you that you wont be able to fish from the side in most areas. So, hopefully they have a boat of some sort available where you are staying.
Top water in the morning close to the rapids always a winner for us.
Certain holes have a lot of fallen trees and shallow roks, so if those are available where you will be i would recommend slow fishing with soft baits - spend some quality time in such areas. Wackly worm (white and pink) work very well for me.
If you are fishing along the river bank (casting from a boat to the bank) and there are thick bushes/trees along the bank i would recommend spinnerbait - white/green/yellow.....i like using a black and red combo one... At these structures i tend to allow the spinnerbait to sink a few seconds before i retrieve. Not saying it is unique or even the best strategy, but i find that sometimes the water is much deeper under those bushes/trees that what you might think.
Rapalas above/below the rapids where there are often beds of round rocks.
PLEASE excuse all possible spelling erros....
Anyway, those are some of the things i would remember on the breede and hopefully not all are too obvious or useless...
ENJOY!