I am a light sleeper too, but after Mitchell was born I slept like the dead the whole time I was in hospital. I left after 2 days but wished I stayed longer cos of the support.
Its open slather when you get home in relation to visitors. You will be surprised at how bloody stupid your friends and family can be (like leaving a mess behind WTF?!). The best visitors call first, bring milk & bread or a hot meal, do the dishes for you &/or watch baby while you have a shower. These people are RARE, dammit.