I haven't made it through all the responses yet, but right now I'm crying too hard to go on.
Okay, I'm preggers, so I'm a bit emotional. But I second everything that's been said. When I found out about my twins at 30 wks I SO did not want to change my birth plan, switch providers, and deal with all the medical people. In fact, I SO did not want to have twins at all! I remember saying things like: This isn't what I wanted. Why me? This isn't how it's supposed to be. For the last weeks of my pg and the delivery, I consented to a minimal number of things. Like Jude, my MW became my over-qualified doula, and I hired a doula as well. The birth was much better than my first (singleton) birth. And now, with my boys about to turn 2, I can say without hesitation that I LOVE having twins. This is exactly how our family is supposed to be. And I guess that's why it was me.
Leslie: I had pit during my first birth (pressured by scare tactics) and I consented to it between baby A and baby B (for a few minutes & continued afterwards for bleeding). I did not have pain meds either time. I don't remember the pit causing any more pain than without, although I have heard that. You may want to be open to taking it as it comes and if YOU feel the need for pain meds, then listen to that. No need to decide before you are there, though, IMO.
I believe there is a thread (or sticky?) of multiples birth stories in this forum that is a great read as well.
All my best to those of you who are expecting. Every one of you absolutely CAN do this. And I bet one of these days you'll even be glad you did.