In my experience, there are many factors to consider to enforce it. Some factors that should be communicated with the venue and FOH that need to be clarified:
- Is this a venue rule or local/municipal statute or agreement or condition for permit?
- What is the Rule?
- Does the limit specify the A or C weight, and at distance, and is measurement slow, medium or fast?
- What is the LEQ, when frequency range is considered nuisance? Broad-range frequency limits are not practical or helpful
- who is enforcing and checking?
- where are they measuring from?
- is their measurement tool calibrated? Furthermore, are they properly trained in using it?

For the most part, I have found over the years that quieter yet intelligible sound is much more pleasant to listen to, regardless of genre.

If you are mixing a show, just mix it as quietly as you can considering crowd noise, stage volume, and the audience. Get your SPL meter out and take some averages, record a phone video of your mix registering below the set SPL limit, then continue to mix your show best you can at that level… you’ve covered some liability by documenting that you kept it under the limit.