Labov and his students went to three department stores in Manhattan, upscale Saks, mid-range Macy’s, and discount S. Klein. They asked questions of clerks that would require a response of “fourth floor.” If they clerk dropped any of the Rs, they then asked the clerk to repeat the answer, pretending they hadn’t heard. In the initial response, the employees at Sak’s had the highest number Rs pronounced, those at S. Klein the least, with Macy’s in the middle. But when repeating the answer, a greater number of employees from each store pronounced their Rs, code-switching into a standard accent. .
If, in a non-Australian setting, someone did not understand me first time, I’d probably de-Aussify when repeating myself (ie go closer to RP). F