If you are having any support people, make sure they have something packed for themself as well. Water, snacks and definitely a change of clothes.

I was talking to DH as second bubs is due in August and we didn't think about him at all during our first birth. Thankfully the hospital organised dinner for him (it was a 6 and a half hour labour so not too long) but I vomited on him and he was so uncomfortable for hours with vomit down his shirt.