Anyway, the most important thing is that baby is fed and happy which in turn leads to a happy mum.
Definitely.
Someone wise once said to me that every parent comes across hurdles. Those hurdles might be weaning, or potty training, or behaviour or a myriad of other things. Or it might be feeding. Just because you face your first hurdle right at the beginning, its doesn't make you a bad parent!
And another helpful thing that someone else (one of my NCT group) said to me was "actually, I found breastfeeding really easy". I had had so many people saying "oh yes, isn't it hard"... in my head the next bit of that sentence is "... but I have succeeded where you have failed". It helped me hugely to realise that different people have different struggles, and what is easy for one person is undesirable, hard, impossible without help or just downright impossible for someone else.
I'm still cycling to work at 38 weeks - that's not actually an achievement, rather it's just luck/genes/whatever that I haven't had any joint pain or similar.
And re alcohol: I have heard from people I trust that at twice the US drink drive limit (this story is from the US), the amount of alcohol in your blood (and hence your breast milk) is about the same as in orange juice. There are many reasons not to give your newborn orange juice; the alcohol content is not one of them. If you are sober enough to pick up the baby you are sober enough to feed them. (Sleeping with them is a whole different case, though).