Why allow tours at all then? If it really is so dangerous that a camera or cell phone could set it off, why risk it? The funny thing is that the grist mill may be more dangerous than the alcohol, the fine powdered flour in the air is very flammable.
Thankfully I got my pictures and lived to develop and print them ;-) And drink the whisky, good stuff, cask strength the only way to drink it. Slainthe!