Originally Posted by bostonguy78
Will there be any security problems if I leave the airport and don't show up for the AMS-JFK flight?
No, you won't - because you'll be safely separated from the passengers on your AMS-JFK flight who would actually like to lynch you because you've delayed their departure from AMS by going inexplicably walkabout.
If you are going to do this, please try and find some way of doing it with a legal break in AMS so that you are not checked in for the AMS-JFK flight.