I too remember the '77 Jubilee; memorable highlights include the then SoS for Defence having a quick catnap during the Royal review at cradle of navigation. Gave rise for a while to the expression "going off for quick 'Mulley' 'fore the pub opens".
This one was far more significant, especially given the travails of the Royal Family over the past couple of years. You've guessed it, I am a loyal Royalist - and who could not be moved by the magnificent rendition of our national anthem.
As for disparaging the waverers and outright dissenters/republicans - remember why we all took up this special and distinctive way of life - to preserve and protect the freedom of our nation.
T paraphrase: I may not agree with what they say, but by God, I will give my life to preserve their right to say it.
God save the Queen