One can check in at anytime after 13h00 if you are Sky Priority. If you arrive at the airport 2 hours before departure you'll be fine. But if you plan to arrive two hours before and then you arrive one hour before due to traffic et al, your check in bags bags are unlikely to get loaded. Checkin online and make sure you have a seat assignment.AF009 security lines are short but Norse Atlantic are ramping up service and all their flights are around midnight. Best advice is to plan to arrive three hours in advance and then the T1 experience should be at worst just a bit tedious!