Hi Fidel1,

The Athens-Amsterdam route is one I fly at least 2-3 times a month and I can tell you that it is very straightforward.

About the online check-in, it depends on if you booked both tickets at once, or booked separately from each other. In each case I believe you will have two different reservation codes.
Each code has a name connected with it. You will need to use the 'Manage my booking' for each code/name separately. The same for when you are doing the online check-in, you will need to do both separately. It *might* be that if you booked both together, the check-in will be together too...but doing them separately should work guaranteed.

Check in is available 30 hours before departure of the first flight; so if you are on the evening flight (KL1576) it should be available from around noon the day before departure.

When you arrive at the airport, you will need to go to desk 104. This is the Skyteam area, and you will see 2-3 desks dedicated to KLM and Air France. You can re-print the tickets from a machine there, or just proceed to one of the desks. At the desk they will weigh the luggage for both of you. You are both allowed to bring one bag of up to 23KG for free.

After that you will have time to take it easy. If you are on the evening flight you will most probably depart from gate B28, which is downstairs. The morning flight usually departs from one of the gates upstairs. They will explain how to get there at the check-in desk Dont worry, they speak Greek there

In Amsterdam you will not have to worry about your luggage, it will be sent to your final destination automatically.

Kalo taxidi