I've been out since 2004 after a mere seven year's service (got out before getting into the immediate pension dependency trap!). Plenty of recurring dreams about life in the RAF!
Two nights ago I had a very vivid dream. I was an officer cadet at a Cranwell-style reception in honour of HM The Queen, who glared at me for slouching with a beer in my hand! The dream got more bizarre, HM was left without bodyguards in a dark alley as part of a convoluted plot by Prince Andrew to commit multiple regicide and assume the throne, for reasons known only to himself.
I have recurring dreams of mealtimes at the Mess and being orderly officer as well!