Just got off the Sky yesterday. We always do walk-off and carry our own luggage. We left the stateroom around 0600, stopped by guest services for the final bill and walked off in just a few minutes. Called an Uber from the curbside and it arrived in 5-7 minutes. Got to the airport in just a few more minutes, walked right through TSA which had no line at all. Got to the gate at 0710.
We were booked on a 12:04 departure and were able to get moved to the 0815 flight instead. Got home 7 hours earlier than planned.
i would not recommend this, but it sure worked out for us.