Indeed Bunny. Suitable means suitable in the Boeing definition. Weather, runways, aids, minima etc.
If you were in charge of BA038, and by a trick of fate one engine quit over AMS in the descent to LHR and you thought....well only one hundred to LHR. Then the other one quit. Mid channel at FL 160?
Well done to the chaps. Good decision. I stick to my comments about o'leary encouraging this sort of thing and perhaps having a sliding scale of charges on the lavatories depending on the emergency. Without putting ideas in his head, perhaps mild food poisoning bacteria in the catering would encourage slot filling of the lavatories. I'll never know because I will never fly with them.