Will be taking a Chicco back-carrier with us on holiday in January but I'm not sure whether we will have to check it in as luggage or will be we able to take it with us onto the plane and stick it in the overhead locker. I'm guessing the former so getting around the airport without it will be a bit of a pain. Also, what would you pack it in? A large holdall or in a big carrier bag? Any suggestions or advice truly welcome! Thank you.