Welcome to the real world outside of the RAF; that field doesn't look particularly confined in any case. However, night CAs was a routine exercise for military helicopter crews prior to NVG. Arguably, it was even more dangerous when PNG were first used by the RAF in the late 1970s before NVGs became available.
I flew my first 14 years in the RAF without NVG Shy and that included CAs and field landings including with a crewman on PNG in NI along with some very challenging RNF flying in Cyprus.
I'm sure you will remember the RAF definition of a CA so that field certainly fits.
My point was that CA's without NVGs ramps the risk up markedly and with fare paying pax on board asks a lot of questions about the legality of it.
Can it be done? Sure, like others I have got the T shirt but is it a sensible thing to do on a commercial operation?