L1A2 - Don't be so negative. Stn Cdrs (or budget holders) have always been allowed to waive all charges if the event has a 'charitable' purpose or where there is benefit to Defence. The definition of charitable, and indeed benefit, in this context can be enormously ambiguous and so long as you don't ask anyone the question it is very unlikely that anyone will ask you to justify your waiver. Where we do run into trouble is over the big events like Airshows where there is a very obvious charging mechanism - so top tip: keep it small and off the radar - and of course have loads of fun while doing good work.
