FWIW, am no Royalist, and would be happy to see a hereditary head of state removed as soon as possible as well as all the hangers on. Actually, I'm not sure why we have a head of state at all.
Having said that, I think Lizzie took-up the mantle at a young age, ran with it with commitment, and in all fairness within the constraints she operates, superficially barely put a foot wrong. The word 'duty' will be used a lot and I don't think she can be faulted for shirking her responsibility. Her family has been a train-wreck and maybe that also goes with the territory.
To have been a respected head of state for as long as she has seems worthy of celebration, so the whole Jubbly Party thing is OK as far as I'm concerned for those into that sort of thing - I reckon we are primarily a Royalist population.
Lots of older people will be happy, some people might even meet their neighbours, booze, food, flag and tut sales will be up, the papers will have a field day sharing the love and Boris will make an arse of himself probs.
Let those that want, have their day.
The Royal family troubles me far less than the malevolent shoot show that's elected to govern-us....