Originally Posted by
Vidiot
good point -- we'll be in economy class.
When you've arrived at the airport around 0435, was the checkin counter/terminal open? So arriving at 5 for an 0620 flight wouldn't be too bad? Air France closes checkin at 0540, but I think we'd definitely want to be past security by that time.
I am certain that the check in counter will be open at that hour. The only issue is the customs desk to have your purchase forms stamped prior to mailing from airport may not yet be open (that is a pain). Suggest checking in for your flight and then going to that window. I have never had them ask to see my purchases.
Also, there will be plenty of places to buy coffee at that hour, although duty free shops may still be closed.