My promotion to Cpl was announced in the Rugby Club and I was handed my blue letter by my Wg Cdr (cost me a round too). Few years later on IOT I was summoned to the Flt Cdr's office, he threw a blue letter at me and muttered 'you'll be ok when you inevitably f**k up here OC Fabs, and no pay rise until you either fail or graduate'.
Not sure if I liked that style or not; got very drunk that night though!