I would ring the airline directly
Yes, Hawaiian Airlines has seat belt extenders for large passengers.
first get a confirmed ticket, then take a bording pass, sit on the said seat in the flight, once the flight takes-off u'r ticket is confirmed good na
http://www.seatguru.com/airlines/British_Airways/information.php
Is a persons who seat behind a desk at the airport
under seat refunds?
Depends on where you are going and where you are.
http://www.seatguru.com/airlines/Singapore_Air/Singapore_Air_Boeing_777-200_3.php it is 3-3-3 in economy class.
There are multiple pieces of reading material provided on Delta Airlines flights. Each seat back is equipped with a safety pamphlet which highlights the features of the plane and what to do in case of an emergency. One can also find a Skymall magazine in their seat back.
Almost all overseas flights on Korean Airlines have TV in the seat backs. Most of the TVs are 10 inch screens and a have variety of entertainment choices.
On Iberia if you purchased a seat in the Business Plus section there are in-seat personal tv's but if you just purchased a seat in the Economy Class section there are only overhead tv's located through the cabin. For Economy Class it depends on where you sit.
http://www.seatguru.com/airlines/Aer_Lingus/Aer_Lingus_Airbus_A330-300.php
No, you are not. Airlines do make an effort to seat people together when requested, but sometimes the flight is just too full to accommodate everyone.