



The Royal Windsor Horse Show or Royal Ascot are private, social events. Conversely, attending the Commonwealth Day Service or, even more so, the State Opening of Parliament are part of the constitutional duties of the Head of State.
I know that raising the prospect of the Queen retiring triggers considerable reaction in this forum, especially from the UK posters, but, being candid, if the Queen is no longer able to fulfill her obligations as Head of State such as attending the State Opening of Parliament or holding a state banquet for a visiting monarch or president, then it is time for Prince Charles to be officially recognized as regent rather than informally deputizing for his mother as if those were one-off events as opposed to something that is likely to become the norm from now on.
Accepting that it is time for a regency doesn't mean not appreciating the Queen's dedication to the United Kingdom, the Empire and the Commonwealth for the past 70 years, or saying she is no longer needed and should be discarded. I am just saying that the Queen can probably serve her people better in retirement than by insisting on carrying on a normal workload when she is struggling to do so.