I have heard that some hospitals "require" epidurals with twin births. I have even heard that some "require" the mom to labor and deliver in the OR in case something goes wrong. But lately I've been hearing from more and more parents telling me a c-section was "required" to deliver their mono-di twins.
I feel pretty lucky that no intervention was ever even suggested for my mono-di twins.
However, I did learn on arriving at the hospital that CFM was "required". (It was not required for my first, a singleton, delivered at the same hospital.) I wish I had known that it would be in advance so I could have had time to decide whether I wanted to decline it or not.