The night rating became a "night qualification" 11 years ago and no longer has a validity or currency requirement. With regard to the carriage of passengers, there is a recency requirement where you must have conducted 3 take-offs and landings in the same class/type of aeroplane within the last 90 days. To carry a passenger at night, at least one of the 3 take-offs and landings must have been conducted at night, unless you hold a valid IR for that class/type.
You can conduct the one night take-off and landing either solo, or with an instructor but not with another pilot/passenger.