@Serenster
Buttery, allegedly the toothpaste story came from when Charles had injured his shoulder after falling while playing polo (that bit is verifiably true) and so had to wear a sling. His valet did a number of things to help him during this period, including putting toothpaste on his toothbrush, but it’s not something he generally does. The story has run and run though!
I don't think it's true, but if someone is getting paid for it and Charles requested it, I think it's fine.
Charles apparently has four valets:
Why four for one man? So that two would always be available to help him change his clothes, which he did up to five times every day (He is always impeccably dressed)
As a gardener I rather liked these(!):
He was also unusually particular about his gardens at Highgrove. Because he refused to use pesticides, he employed four gardeners who would lie, nose-down, on a trailer pulled by a slow-moving Land Rover to pluck out weeds.
In addition, retired Indian servicemen were deployed to prowl through the undergrowth at night with torches and handpick slugs from the leaves of plants.
From this article (very interesting, although I wonder how many of the things mentioned are true or exaggerated) www.google.com/amp/s/www.dailymail.co.uk/femail/article-5511397/amp/Prince-Charless-remarkable-travel-demands-revealed.html
Covers staff, travel and other details