Until this COVID nonsense I used to work for a venue management company. We were the site of a lot of trade shows and worked with the organisers to get the show into as good a state as possible compliance-wise before it opened. Individual exhibitors' electrical safety was usually a gateway drug for other horrors. Where we got pushback, we looked further. When we did, we would find the same attitude persisted in all aspects of their presentation - equipment modified or used outside designed purpose, unstable exhibits or materials, poor cold chain storage, you name it. In food or home shows, we were often working with LPG on site, inside a building too. The electrical faults we found through compliance checking would have contributed badly if there was an LPG leak (which we also found, just about every show). If people grasp electrical testing, they generally grasp a wider range of safety concepts.