I'm not in favour of the continued existence of the Royal Family.
From the perspective of - we are stuck with them, how can we make the best of it - I would rather see the Coronation focus on local (free) celebrations around the UK (and Commonwealth) that might actually bring pleasure to people or at least be 'something to do' when people are struggling to afford leisure activities.
I don't think we should spunk millions on showing off to the world at large. It won't make us any more popular in the long term - it will be forgotten within days.