I logged on at midnight on the day I was able to do the final check in and got 11-11:15 time, group 2. I’m hoping to get a Palo brunch reservation so wanted to be among the first on the ship.
my advice is to log on as soon as the window opens and make sure you have all the info for all passengers including the head shots and passport photos readily available. Say you are driving to the port as this will save you some time, you can go back and edit things later if necessary.
Good luck!