If you're flying a single then night pax charter ops won't happen so the CIR won't be much use unless it's freight only, however...
...there can be a need to reposition before 1st light or after dark, in which case a CIR or NVFR will be needed. No CIR or no NVFR means no flying at night. The advantage of a NVFR is that it doesn't lapse, unlike a CIR. You lose any night privileges your CIR gives you when the CIR lapses. It's not always easy to renew a CIR when you're in the bush somewhere.
Sometimes NVFR can mean being able to fly into a strip where IFR won't allow so a NVFR rating (or CIR with NVFR privileges) can be beneficial in that type of case. Other times a CIR can be more useful due to not having the 60 min flight time limit for an alternate required due navaid.
Last edited by Tinstaafl; 11th July 2012 at 06:54.