the FAA ppl has night privilegies included and is ICAO recognized worldwide. you can use it anywhere in the world with any aircraft day and night. It is only up to the owner of the aircraft if he will rent the aircraft to you or not, legally you can fly all over the world any registration aircraft for ppl purposes only.
outside the USA you do need the FCC radio license or any equivalent, you could get for example the UK radio license for that purpose, or any ICAO radio license.
will anybody check it out? I do not think so, it never happened to me in the last 25 flying years