The NAAFI was very important on HM Ships. It was the only shop in town! What happens now? - 4 Greens
It was indeed and, considering the almost invariably complicated supply line, generally very good at providing what one might call everyday necessities and goodies in corner shop style, rather than any attempt to be a major supplier of all sorts of goods and services.
In the Naval Canteen Service (NCS), the canteen manager was normally a respected member of the senior rates' mess, none more so than
https://en.wikipedia.org/wiki/John_Leake_(NAAFI_manager)
On a lighter note, the old joke was that the canteen manager's cry as the shutter went up was, "Canteen's open!", immediately followed by a crash as the shutter went down, then "Canteen's closed! Mind your fingers son!".
So far as"What happens now?" is concerned, in the Submarine Service the Chief of the Boat would normally run a form of mini canteen, and I suspect that Jolly Jack in the surface Fleet will continue to be looked after by some similar operation, rather than from any external source.
Jack