It is all very simple really
You get up, finish any packing you need to do, go to breakfast and get off the ship.
You can have breakfast at the buffet on deck or you go to the dining room you were in on the previous night, early sitting goes first at about 6:45am and second sitting goes after about 8:00.
You take any luggage you are carrying with you off the ship to breakfast, although we have left things in the room, especially if you are eating early.
When you are done eating and the ship is cleared by customs you just leave by the same route that you came in on, from the atrium.
You enter the terminal building and find your luggage if you have sent some off the night before. You take your luggage, hand in your customs form and then leave the building to whatever transportation you have arranged.
Simple and relatively painless
Robin