So for your 90 days per year, you'd like to hand out keys, man the gate or perhaps do the copying or make the tea for the 'professionals'..I don't think so.
(my mistake, tea bars aren't allowed now!)
Even today, an ex-Lossie guy was telling me and a CAA guy that the RAF was so sure that rumours of a better life outside was untrue that they sent a Groupie to check it out. When the Groupie came back he said the rumours were indeed true and that he'd been offered a job too...The guy didn't say if the Groupie took the job or not.
If you left more that 5 years ago then, if you went back, you'd get shock from shortages and conditions.