Ok, here’s an interesting lesson learned during How To Train Your Dragon: The Hidden World.
The showing observed for this evaluation took place at a theater that does dine-in service, offering various foods that are prepared in the kitchen of the theater, and brought out to audience members in the theater.
While this helps look at your menu at any point in a film’s run, it also really screws with a 3D film’s brightness factor, as you’ve got multiple mini light sources polluting the purity of the experience. So if you’re planning on seeing a 3D movie, and your theater of choice is a dine-in experience, you may want to find a different venue.
This detail is mentioned because, in addition to the usual “mileage may vary” warning about how a theater maintains its projector’s brightness, you must also take into account that in a dine-in theater, there are small lights that remain on during the duration of the film.