I try very hard (not always successful) never to fly a route at
night that I haven't flown in daylight.

As for carrying someone along who is night current -- unless they're
CFI or Commercial, isn't that the point? To get current to carry
passengers? If CFI or Commercial, then they could be considered
the PIC and you're the passenger so it's legal.

Can't find my FAR right now, this is all from memory...

And there are times I'm convinced that senility set in with puberty