Done that so many times I have perfected a technique to spare blushes. Keep on waving/calling but look past their shoulder as if you are aiming at someone behind them.
And Van the Man covered Jim Reeves "Have I told you lately that I love you" - not sure which I prefer. And Donny Osmond had a bigger hit with Twelfth of Never than Jimmy Young. [And never begin a sentence with and]
First cut is the deepest - Cat Stevens. Innumerable covers have more airtime (Rod Stewart, etc). Not as good as the original and they all miss out a whole line of lyrics which drives me nuts.
Sean, you patently have never been to a point-to-point. Great family/friends day out with lucious picnics, booze and part of the fun having a flutter. No vice where I'm concerned. Ditto a day at the races is very convivial.