Originally Posted by
irishguy28
Just like when you check in, you always deal with the operating carrier.
(Given the nature of AF, KL, and Delta's relationship, you will find anyway that there are no AF staff and no DL staff* at AMS - they are both represented/handled by KLM)
*unless you are travelling on a DL staff ticket.
Likewise for KLM at JFK, which is entirely contracted out to Delta.
Safe travels, I doubt you'll have any issues.