Sorry if this is a silly question! I've booked a flight for four of us next weekend (cheapest economy), but now one of the party is unable to travel. When I looked into cancelling in MMB there are various charges quoted. So what happens if we just turn up at the airport and inform them that we are one short?

Also, I haven't gone right through the cancellation procedure in MMB in case it tries to cancel all of us. Does it allow cacellation of just one person?

Thanks in anticipation