I kid you not. Was on QF 1 (DBX to LHR) few days ago, and FA sheepishly told me they could only offer J champagne as the F one was not loaded. Politely declined, it was 3am in the morning so was only looking for a drink before bed so I was not going to get worried about it. Was just suprised though, especially considering the Syd to Dbx service was less than stellar (forgot to heat up main meal, drink accidentially spilt onto me).