Well I have been to a twin birth (but it was my own ;) I had to deliver in the OR for safety purposes.. I was told that if I didn't get an epideral that they would quickly knock me out if they had any problems and perform a c section.. But if I had an Epideral already put in than I would be awake either way. Initially I tried to go natural (as I did with my first pregnancy) but after an hour of super intense contractions right on top of eachother I opted out and got the epideral. I'm not sure where in OR you are, but I am in Southern Oregon and in the OR they would only allow my husband in (and he had to be in full scrubs) and there was the ob doc, two nurses and two pediatricians on standby. (kinda a big deal) I had no complications during my pregnancy so I wasn't a special case or anything... and once they discovered Baby A was "sunnyside up" they realized why I was in soo much pain soo quickly in the labor... Baby A came out with suction (cuz of his postion) and baby B came out 30 minutes later healthy as can be...
A couple things I learned coming out of the delivery is that BABY A is usually Bigger, and BABY B is usually the more concerning one, (that's why she used suction she didn't want to take her time cuz I guess the risks are higher. My twins were 6lb7 oz and 6lb 14oz I was Induced (finally) at 37 weeks and 5 days, I'm 5'2 and the babies were all out front.. so another thing I would recommend is to wrap mamas tummy once you get the ok from the doc.. I have a HUGE diastasis recti separation as a result of my large babies on my small frame. In fact I would talk to the mom now about excercises she can do to prevent this horrible side effect .. (only way to repair it is tummytuck otherwise, and certain excercises will just make it worse)
If I can help in anyway please ask... i've done tons of research on twin births and I love to help out other twin mamas (I started a twin group in my community as well)