Here's the link to the book in case anyone wanted to look.
www.amazon.co.uk/dp/B08VC4WFDG?fbclid=IwAR25dedoZM5cS0qIsubt6sXZvBcHas3PFNzOciOYr7hcvADYREwg2G7rfUo&tag=mumsnetforu03-21
Expressing can be tricky but some people find it easy. I think the key is to remember that when you're expressing, you're really getting the "excess" milk. Babies are more efficient than a pump and when a baby is feeding, you're getting all kinds of biological feedback which signal to your body that your baby is feeding and hence make more milk. A pump only really recreates two of these signals - the removal of milk and the sucking action (nipple stimulation). What you don't have is oxytocin, skin to skin, the smell of your baby and the hormonal feedback. You can often train your body to produce more by expressing regularly, indeed, that's what happens when someone exclusively pumps milk or pumps a large proportion of their baby's milk. But if you don't pump regularly, then you'll find as your milk supply regulates over the first 3-6 months and you stop leaking etc, you'll stop producing excess and then if you want to express after this point, you'll probably find you don't produce anything for the pump any more. It is then possible to increase pumping supply, but if you just want to do it as and when for the odd evening out etc, I (personally) found that wasn't really possible after about 6 months.
A lot of people like the idea of expressing for a bottle for their partner to feed, in reality I think this can end up being more work for you than you save by having your partner do one feed! Especially if you end up responsible for cleaning and sterilising the pump and bottle, organising storage of the milk, etc. OTOH, if you find you leak a lot, you can use breast shells or there's a "passive" pump out now called a Haakaa, which can be used to collect run-off milk that you're leaking, for example during feeding your baby, which is a common time to leak. This can then be decanted into a bottle to use as an extra feed, which can be no effort at all! But it doesn't work for everyone. I didn't leak a lot with DS1 and not at all with DS2.
I don't think nipple confusion is as big of an issue as people seem to think it is. Maybe for very tiny babies who are still learning to latch. I suppose it's good to be aware of it as a potential problem, but I def wouldn't get too hung up on it. OTOH a lot of people think if they introduce a bottle too late, then babies won't take to them at all but I don't think this is true either. Bottle refusal just seems to be a random thing that some babies decide to do at about 3-4 months old, and they will do it whether they have had a bottle beforehand or not.
I would say that 10+ hour cluster feeding sessions are rare (and tend to spread into the night if that happens anyway). If it gets too much at any point, you can always just put the baby down and go to another room. Yes, they might cry, but even if what they really want is milk, dads or other people can develop calming strategies for babies all of their own, and if there really is nobody else, they will be OK while you get your breath back for 5 minutes. Cluster feeding is common, but it's normally more like 2-3 hours at a time in the early evening, at a time when you generally want to be sat on your bum watching TV anyway, so it's not tooo bad to be immobile, it can be quite a nice excuse! Or set up your bed for safe co-sleeping (even if you don't want to do this as their main sleep space) and doze. Buy your partner a cookery book now if they don't currently cook 
, batch cook for the freezer during late pregnancy and getting acquainted with a slow cooker and your local takeaways is also not a bad idea, because it does tend to happen right at tea time and breastfeeding makes you hungry. Cluster feeding is wearing but I think if you're expecting it, it's not quite as bad as if you are expecting them to feed for 10 minutes and then be put down for the next 2-4 hours.
Midwives in theory should be able to help you with establishing feeding, but unfortunately they don't all have good training or experience with BF... sometimes their advice can be really good, but sometimes it can be incomplete. I'd recommend that anyone who wants to BF locates a source near them which is reliable - whether that's a book or helpline or a support group or an IBCLC - it's just unfortunately a bit of a postcode lottery and a lot of NHS areas don't have breastfeeding support on staff, other than the very basic training midwives have (which might have been years ago and half forgotten). Health visitors aren't usually trained in breastfeeding, and neither are GPs. Hospitals tend to want you out ASAP even in normal times because they need the beds! But you should get midwife home visits up to about day 10 before being discharged back to HV.
Sorry this ended up really long...