As someone who did suffer from a "bowel related disability" I appreciate that you are willing to take this stand.

I will however also add that in case of genuine emergency there was literally, and I assure you that I am using that word correctly, no force on earth that would prevent the inevitable from happening. The desperate determination with which I asserted that need proved sufficient, on at least one occasion, to gain me access to an airplane toilet during taxi.

If a Starbucks employee denied me access to their toilet at a moment of genuine need they'd've ended up with a pile of very loose stool on their floor.