Sometime during the cruise there will be some papers to fill out having to do with your departure flights, just fill in all the information and they should have you off the ship in order of your flights. I too have a 1:15 flight out of Miami after a Voyager cruise, hopefully we'll have plenty of time. When you get the colored tags, just remember what you color is and they will call you off that way.
I have a 12:20 flight out of FLL but the airline has told me to be there two hours in advance because of traveling in a wheelchair and the extra time it takes in security and booking me with the chair. But I am sure the cruiseline will not care one bit about that. they will look at the flight time and I won't be allowed off till several colors are called. I just pray when I do get off that I can manage to get my luggage and get a taxi that will take the wheelchair and get to that airport in time. Just what I need lots of stress at the end of the cruise. I sure wish they had had some later flight. It is my biggest concern in this whole trip