Great List KR.

Mel - pack an overnight bag for each of the kids with Pj's a change of clothes etc just like they would use if they were having a slumber party at a friends house.
The only other thing I would suggest (as suggested to me once) is to pack babies firsts with your labour stuff - so a catching blanket, wrap, onesie or whatever you want bub in first so if they have a dryer or warmer they can put them in there so when bub does arrive there is a nice warm change of clothes AND you don't have to rummage around in bags to find something.

I am not sure about Birth Centres and what they have or what hteir policies are but if you are allowed to burn oils maybe take your own electric oil burner JIC theirs doesn't work??

OHHHH AND a change of clothes for DH, plus some shorts etc in case he needs to get wet (shower/bath).

gosh everything is getting closer isn't it

Nae x