Originally Posted by
yyznomad
Weird... gives me a list of valid origins, all out of Europe only - sorry for the quick copy and paste... but just to get the gist across:
PROMOTION CODE : JFMER2W1
Eligible Origins
FROM
[...]
Also, only economy and premium economy. With most or all PY fares not really cheaper tan the lowest P fares on the same route. As last for the couple of routes I checked.