You do not need to go out to the ticketing counter with carry on luggage. Just walk straight down to the gate. You will need your passport and several times they have asked to see my credit card that I used to purchase the tickets. They had some serious scheduling problems back in October but we have used them 3 times since December and flights have been right on time. On one flight my connection time was scheduled for less than an hour between flights. I called IC customer service and she sent a message to the gate ahead of time to alert them that we would be tight. All worked well.