While we're waiting for
AlaskaCoho's reply, here's some
light reading on the US standard for RNP. It doesn't have MFD graphics but does contain some interesting technical info.
The ability to execute a Cat III (and Cat II, for that matter) procedure depends on several factors, including runway lighting and marking, approach lighting systems, standby power availability, etc. Some airports that may have the nav capability might lack these supporting features. You have to have the whole enchilada.