I agree about the duty free shopping at AMS. On the return flight from Stüttgart to Mexico (via AMS) I would spent the entire 3 hour layover shopping. Using a lounge was the farthest from my mind. Between the French champanges, Belgian Chocolates, Swiss Watches, etc., there was NO time to waste. There are stores with each type of product. However, give yourself at least 45 minutes to an hour to get to your gate. I literally almost missed my flight because unknown to me, I still had to go through a Passport Checkpoint and security. I didn't know I had left the "secure area". Also . . . not sure what the US Customs guidelines are for bringing cheese in the States, but my Camembert was confiscated at Mexico customs when I arrived. Kind of hard to hide the "smell" after a 10 hour flight. I got a funny look when I answered NO to the question if I was bringing back any food.

Happy Shopping!