Wow, but thanks! Seems like your last paragraph tells it best and I shall remember it.

It occurs to me that a number of people probably make a very good living keeping all this sorted and informing outsiders of decorum, style, protocols and forms of address. (Also, probably very common knowledge for every UK school kid.)

As a side note, a friend of mine, now contracted to the royal military as an instructor, encountered at least one, possibly both, of the Princes a year or so ago in the normal course of his duties. If I recall, he/they were referred to as Lieutenant (Leftenant) Wales. Sound right?

Thank you again for the corrected information.