I have told this story on another forum so apologies for posting it here but it is airline related and may be of interest.
In the early 1980s I took a Cook's escorted tour around the southern states of the US. Also on the holiday as punters were the actress Thora Hird and her husband. Thora, either in her 60s or early 70s, was recovering from a hip op and walked with a stick as a result. Her husband was not in the best of health either.
All on the holiday knew who she was but she mucked in with everyone and never once did she play the star or seek advantage.
When we were due to return from Atlanta to Gatwick, the aicraft we were supposed to be on was delayed considerably by snow and ice in the UK. We waited a long time at Atlanta airport but were eventually transferred to another aircraft. By that time everyone was very tired and fed-up.
As we went on board, the CC recognised Thora and offered her a complimentary upgrade to first class. She declined, saying she would prefer to sit with ''her friends'' in steerage. The reality was they were only fellow travellers who she was most unlikely ever to meet again. What a fine actress she was and a wonderful person who was untouched by her celebrity status.