Hi. After booking flights for solo travel on British Airways, my sister broke her arm (in a cast) and is unlikely to heal before the flight. She wanted to request for special assistance at the airports as she is unlikely to be able to manage her luggage by herself. Instead she was told that this cannot be pre-arranged. Instead, she should make a request at the check-in counter. Is there any risk that her request will be denied at the check-in counter? If so, she may consider cancelling her flight and rebooking with another airline.
Her flight consist of a stopover and one leg of the flight is operated by another airline (Quantas). If she successfully obtains special assistance at airport A, what must she do to request for similar assistance at airport B and C?