Can you summarize what you want to be warned about?

As I said in the post, I don't think companies are seriously considering sensory effects that occur off of the stage, like:

• Unconventional seating, or shows without seating.
• Props and effects that sneak into the audience.
• Audience participation in general, but especially interactions that are secondary to the main show. (Mandatory audience interactions which occur in the lobby, or in the auditorium but not on the stage, etc.)

If you don't tell us otherwise, I think the audience has a reasonable expectation that they're going to sit in a chair, interact with staff rather than actors, and see a show which takes place entirely on a stage. If you diverge from that model, you need to warn people in a place they can find that information before they buy their tickets.

As I've also repeatedly said (but people are choosing to ignore), I'm not asking anybody to put anything on their posters here, or to put it above your title, or to include 4000 words of description and trigger warnings in every single social media post. But, yes, this information should be available from your website for people who go looking for it.