Interestingly, I am pretty sure (from both US instructors & reading the relevant FAR part 61 notes) that my FAA PPL issued under Part 61.75 on the basis of my JAR PPL does allow me to fly with passengers at night providing the currency requirements are met.
This is despite the fact that the UK PPL syllabus does not include night flying at all, let alone the 100 mi CC & 10 take offs & landings.
(Almost) needless to say, I'm not taking advantage of this loophole until I'm happy with my night flying skillset, which will certainly mean exceeding the FAA training requirements.
Regards all, enq.