I'd pack fairly light. My baby and I were both kept in hospital for a week due to various unexpected complications which is obviously one of the less desirable outcomes, but after our first night my DH just popped home to grab more stuff. And by that time we'd met the baby so we knew what size she was which made it all fairly simple.
So if you do end up having to stay in for a while then just ask them bring a few bits for you. Makes it all a lot easier.