LH747FTL, don`t force your luck at AMS.

All the wardens there are very well aware of KLM`s strict policies and they will turn you away without making any exception.

They will advise you, that you can pay for lounge vouchers with FD points.

Sometimes, if you argue a little bit, you might be able to buy one voucher instead of five for 1000 FD points, but I would not count on that possibility.

However, you can check www.ebay.de
Lots of offers for KLM lounge vouchers, starting at 1 Euro.If they are only valid a few more weeks, you can actually make a good deal.Average costs is around 7-10 Euros.

Probadly not a good deal, but if you like to drink two or three beers and some more drinks, it is probadly worth it.