I've been in theaters. Sometimes they have no doors on the washrooms, just a short corridor that turns a couple of times to block the view from the outside. Airports do this, as well. But in every restaurant I can remember, the doors swing in to the restroom. There must be something in the code about this (in the US, anyway). I'm well aware of the Cocoanut Grove fire that led to these codes. But it is apparent that they don't always apply to rooms within a building to the extent that they apply to building main exits.
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