Wave away....
I always like to wave too, especially passing EGHQ, coming around the corner on taxiway J, approaching the Bravo stands. I use two fingers and aim my wave at the top floor offices........
hahah! You beat me to it. I too used to fling a cheery salute at the geniuses at EGHQ, although I favoured the North American variant that only requires the single longest digit.
I guess you could call it a wave...?
Nice story. Does illustrate the contrast between the cheerless drudge of EK and well, other places.