I just booked my first flight on BA to get to London for New Year's.
During the booking process it asked for "first name" and "last name" I simply inputted my first given name and last name. After the booking process was completed, on the manage my booking page it asks for advance passenger information in which I supplied all my given names on my passport (which includes my middle name).
This freaked me out a bit because I'm use to traveling on AA where it asks for your middle name and your entire name is put onto the ticket.
My question is should I have put all my given names in the "first name" box while booking? Will this create problems later on?
For example if my name is John William Henry Smith I simply just have "John Smith" on the booking and I supplied the rest in my advance passenger information.