Cheap Beer !
As a civilian captain who flys out of military bases now & then I am told that if I had to night stop then I would be sent to the Officers Mess however I'm told that my cabin crew would be sent to the SNCO's mess.
Informed comment has it that the SNCO's mess is the location of the good food and cheap beer ! This in my opinion is not the way to treat the commander of an aircraft !!.