Men bow, women curtsy - though nowadays, a quick nod of the head will do.
First depending on your gender bow/curtsy, and call him, Your Royal Highness and after words Sir
Girls don't bow they curtsy
arch, bend, curtsy, curve
A slight bow for females.
what you should do is curtsy or bow and be very polite. Do not be silly or stupid.
A man would "bow", while the female equivalent is to "curtsy" - (see link below). "curtsied" is the past participle of "curtsy".
Yes, one would curtsy or bow to Camilla, as she is the Princess of Wales(she doesn't use that title, she uses the title Duchess of Cornwall)
Preferred pronunciation is "oh-BAY-sense", but also listed is "oh-BEE-sense". (giving deference to one in charge, as with royalty) or (a bow or curtsy)
A man should bow and a lady should curtsy. On first speaking, the Queen should be addressed as 'Your Majesty'.
Prince Philip
The gesture of respect by a man is to "bow" or to kneel, and for the woman is a "curtsy" (or curtsey, as in courtesy).
Philip Prince goes by Phil.