The cupboards are moderate in size. We managed to house an entire 5 piece drum kit inside.
Currently in our setup there are a pair of speakers mounted on the wall, by either side of the stage. When installing them, the condition was that we cannot question about their use and agree that anyone using the hall, can use them.
One week, we noticed that the wiring on those were cut & not even reconnected. We didn't lodge a complaint as that was what we agreed to and we knew the risks. So, to avoid any trouble, we're willing to keep those where they are, and make sure that our new stuff is safe under lock and key every week.
Its not that we don't want to have a cooperation with other groups, its just that we prefer to be safe than sorry.