We are a family of 4- two of us will have paper tickets because we used travel vouchers therefore we cannot check in online, the other two will have ticketless because it was booked online with a credit card- If I check in online for 2 and get A boarding passes, then go to the airport and checkin the other 2 but get B or C boarding passes- Can we all go together in the A line or do we have to seperate?