Food, stuff to read, music, food and money (to buy more food when you eat all yours)
The stay up the head end advice is good, my first was a C section and they accidentaly knocked over the “curtain” in the middle so I saw the huge whole they had sliced through my missus, although I can literally say I know her inside and out now.
2nd time I foolishly looked down below when the midwife said you could see the head…
Thankfully I was so traumatised by the whole incident that I have absolutely no recollection of what I saw as my subconscious seems to have forced me to forget.