I'm sort of in the same boat, no pun intended. Actually the American flights I wanted both left at 10 a.m. I know the ship schedule says 6:30 but everything else I see says 6 am. I found a United flight I booked in Business that leaves at noon. I'm planning to self depart (meaning carry my own luggage), walk to the train station and God willing be at the airport by 8. This is assuming they do allow people to self depart, which is done in the states all the time. My worry is the Covid test, I'll be using the emed test and hope the connection is good the day prior. If not I'm not sure.