I remember working on a very big aeroplane in the 90's and there was a techy corporal who was a workmate of mine with the surname of a very famous supermarket chain who was in fact a member of said family. He regularly entertained the high and mighty and suchlike at his farmhouse. As he rightly said, treat everyone with courtesy and respect, expect the same in return and you can't go far wrong.
I well remember at a fighter staish in the 70's we had a visit from Roy Mason who was Minister of Defence at the time. He had a look round our Sqdn and greeted me, a lowly SAC at the time by name, shook hands etc much to the bemusement of the entourage. I of course had the advantage of my old man and he being old politico mates. I was asked by OC Admin later in the day in a very round about way whether 'I had his ear' which I found and still do rib burstingly funny.