Well Beagle the Airforce I was and still am in has had many naked moments and I am neither a rock ape or SH. Go to any service rugby club on a sat evening and there is a fair chance of nakedness, go on a service rugby club tour particularly abroad and you might as well not take any clothes! All ranks get involved including our Commisioned members (gosh really).
I remember naked mess rugby O's vs Sgt Mess on more than one occasion after exchange drinks (Bit homo I k now) and I have yet to see anyone reprimanded let alone lose their commision!
Yes it is slightly embarrassing for the Royal Family but only cos he was caught, a little tighter control is all that is required.
Harry and his brother have done so much for the monarchy and are doing great for their country in their military roles, cut him some slack ffs.
Perhaps Beagle if you spent a little less time on here (19,000 posts!) You would have a less stuffy grip on reality.