Every time you see it its paired with a date: “Only In Theaters September 9th”. Why would they advertise that their movie is only in theaters for one day? I understand FOMO but that seems really intense.
I realize that the text is actually saying that it is running exclusively in theaters for awhile and that theater time starts on September 9th but the wording simply isn’t there…


I think the easiest option would be to separate them from eachother. “Only in theaters” and “September 9th” as 2 separate statements would remove the ability to combine them into a single sentence.
Alternatively, adding the word “starting” between them would work or adding the word “releasing” before everything. Both would imply that the movie will be in theaters exclusively and also that itll be longer than one day.
While this whole post was intended as silly, I do think that this would help differentiate theaters runs vs the special 1 day screenings that have gotten more and more popular in recent years.