Paying the janitor is quite an issue.
At a certain town hall in the north of England, there is a fine organ. If there is something else going on, getting access to it on a Saturday is no problem. However, if they have to open the building specially for you, they have to pay not one person but two, because there is a union agreement that nobody should be in the building alone - and I can see why.
Furthermore, there is another agreement that once somebody has been called out to work, they are paid for a full 8 hour shift. In fact, because it's a Saturday, they get time and a half.
Hence it costs the council several hundred pounds just to unlock the door.