In fact, one of my favorite theaters around here is all unisex bathrooms. You shut a door and you have a dedicated toilet and sink. It’s fantastic.

That dramatically reduces capacity though. Which is fine if you don’t need that capacity, and/or aren’t trying to retrofit existing facilities without spending a fortune.

There’s a pizza place nearish me that has two single occupancy unisex restrooms, for example. But before they moved to unisex they had two single occupancy gendered restrooms, so they were just changing signage rather than having to do any kind of construction to make it happen. As opposed to say a local theater that has 6 toilets, 4 urinals and 4 sinks in one restroom and not remotely enough space to have 6 separate rooms with a toilet and sink each in the same space - but they expected to need higher throughput in a smaller footprint (less so now, but they were pretty busy pre-COVID).