Bertie is spot on about pumping.
I had to pump to start with as one of mine was just too exhausted to figure out the latch for a few days post birth (breastfeeding takes two, one of my babies got it straight away the other didn’t).
Pumping colostrum- not fun.
After that I only pumped when I absolutely had to eg a rare night out. It made me feel like a cow and as Bertie says it’s not the time or effort saver people would have you believe.
To add to my previous comments about breastfeeding. Breast feeding twins is bloody hard work in the beginning. If she chooses to bf you need to commit 100%. No hasselling her at 3am when she and the babies are both crying about “wouldn’t it just be easier to give up” (she might throw the top and tail bowl at you. Not that I ever threatened this of course. Ahem)
You support her right up to the point when she says she’s done, at which point you hug her and go get in the car and buy formula, bottles and a steriliser.
(I never got to that point because it all magically and suddenly got easier 18 weeks in so I kept going until they were 18 months)
Don't decide to make a collage of baby pictures when you should be putting laundry away
Pollaidh this made me roar with laughter. It’s so completely true.
Cleaning out the garage, also not that helpful when the piles of laundry are about to walk out the door just to give another example. .
David take careful note. 
What Pollaid said about being desperate for you to walk through the door at night is also very true. Unless two people screamed at you, weed and vomited on you for eight hours that day, you didn’t have a bad day and you aren’t tired. 
NB: the fact that the babies are quiet and smiling when you walk through the door does not mean it hasn’t been a hellish day right up until that point.
Finally I was thinking about what you said David about you and your wife being quite high flying.
That probably means you are both highly organised which is an excellent trait for having twins. You have no idea how much stuff is about to enter you home. And I don’t mean toys.
Secondly high flying career types tend to like to control their world.
Babies, particularly if you have two of them, strip you of any illusion of control.
Walking out the door can be a challenge. You have to get used to being late for things for a while (and I hate being late).
Babies don’t keep to schedules and twin babies don’t even keep to the same schedule.
Personally I think following The Contented Little baby book by She Who Must Not Be Named, is madness with twins. Madness.
However if your wife likes a schedule I found the Baby Whisperer quite useful and followed it loosely. The EASY framework is quite useful (although my twins weren’t on the same schedule for 8 months so I rarely got to Y).
You will be so tired that you can’t remember what day it is. Your wife will be so tired she won’t be able to remember her own name occasionally. You will forget where you put stuff. You will change the same nappy twice. Lists will be your friend.
But it will be ok. Because the time you get to six months your body will have stopped struggling and you’ll start to feel better.
On reading this over it seems a little scary and negative. I don’t mean it to be, but reading other people’s posts reminded me about things I wished we known at the start.
Having twins is a bit like doing a parachute jump:
Hugely exciting but hugely nerve wracking in advance.
Completely bloody terrifying when you jump out the door.
Incredibly amazing when you get used to it, but still simultaneously terrifying.
When you eventually land back on your feet and things become normalish again (in our case when they were about 2.5 yo) you will both be stronger, tougher, more resilient and happier than you were before.
If you had a strong marriage before then having twins should temper it like steel, it will feel like you’ve been to war together.
All the stuff we are telling you about is the hard early years. And no doubt about it they are hard.
But the hard early years are also filled with enormous fun too.
We have a million funny stories about our twins as babies. Another million about how incredibly cute they were as toddlers while also being evil geniuses (eg one crouches in front of the stair gate so the other can climb over or taking each other’s nappies off to forestall bedtime).
Our two used to babble away to each other in their pram or cots and then roar with laughter at each other. They have a whole relationship which is entirely separate from us.
As I said in my first post, twins are awesome.