Ask for useful limits without asking for a personal story
Someone can rule out a scene type privately, through a short message, or without explaining why. The chooser only needs enough detail to check the title. “No realistic scenes of an animal being hurt” is a more usable boundary than assuming that a broad genre will or will not be comfortable.
Check the exact cut and available descriptions
A regional age rating, content notes and a trusted viewer’s description can help the chooser assess a title. They may not cover every detail or edition. If a particular uncertainty matters, look for a more specific account or ask the affected viewer whether they would rather choose a different film.
Agree how to switch during the film
Do not require someone to explain a sensitive reason in front of everyone. They can tell the chooser privately or simply rule out a title. Have a second option ready in case a scene turns out to be different from the description.
Choose a simple signal to pause or stop and agree on a backup before playing. For example, anyone can say “switch” without having to justify it to the whole room. If some viewers still want the first film, arrange another time for them rather than pressuring the person who asked to stop.