<shrugs> What does calling him Willy have to do with his military service? I call an acquaintance of mine in the military Freddie instead of Frederick. He's a colonel with actual combat experience in Vietnam. If no one is bothered by my familiar tone with him, likewise no one on the Internet should be bothered by an American referring to a flight lieutenant in the British forces with meager experience as Willy.
Fact is, you're actually framing an argument that Willy deserves deference thanks to his aristocratic pedigree rather than any status as a 'serviceman'. Otherwise, we'd all be calling any service member by their titles rather than a familiar name.
Hmm, some poor logic here.
I am telling you the purpose of MY thread which I created and therefore should know 100% all about it. Meanwhile neither you nor Suk can know the same about the motives behind the royal wedding and the decision to not invite Mr. Obama, although you have offered your own opinions which match the explanations coming from the royal spokespersons.
In any case, we are free to either accept or not accept any offered explanation above.