I don't ever remember actually seeing people from PNG.
A larger group of PNGers visited Brisbane in the mid 90s. I don't know if they traveled to other areas as well. As far as I know that's the only time an extended group visited from PNG. That Liuaki fellow spoke a few times in Brisbane over the years.Liuaki was the only one though, I didn't see any other PNG-ians at BCF.