You will need to bring a few things with you to the airport. You will need to bring your S-Trip! Code (must be signed, and signed by a parent if you are under 18 at the time of travel), your Insurance Card, and your e-ticket.
The e-ticket and insurance card will be available for you to print on your online profile about 1-2 weeks prior to your trip departure. They as well as the Code of Conduct can be found on your online profile and clicking the left hand side where it says, "View Your Trip" in a blue box, followed by the "Details" tab near the top of the page. If you scroll down on the "Details" tab you will see a heading that says "Important Documents" which is where all documents needing to print will be.
Your e-ticket is very important as it will have a code on it that you will need at the airport to print your boarding passes.
You will also need to bring your valid Canadian passport! Do not pack this in your checked luggage (may sound ridiculous but, believe me, it's happened before!).
Passengers travelling on international flights must arrive at the airport at least 3 hours prior to departure. If you are travelling on a domestic flight first ex. Halifax to Toronto (then Toronto to Cuba) you will only need to arrive at the airport 1.5 hours prior to the flight departure.
An S-Trip! Trip Leader wearing a bright blue/yellow S-trip! uniform will meet you en route to destination. If you have connecting flights they will meet you for the international flight at the departure gate 2-3 hours prior to departure. If you are on a direct flight they will meet you at the airline check in counter and assist you with the check in process
When you are on your way home you will need to be picked up at Arrivals. You will want to allow 45 minutes - 1 hour for you to collect your luggage, go through customs to be picked up after you arrive home.
As for your customs card, you will get this on the plane on the way to the destination. For your address all you need to put is the name of the hotel.