Hi No19 - I think you will find it a bit easier with no 2 baby, you do know more and are probably a bit more assertive than you were 9 years ago, so you can definately keep control of your labour more this time. Remember that hospitals and drs can only advise you of what they think is the best option, it is up to you to decide what you want to do, if you want to follow their advice or not, so bookmark the NICE guidelines for later.
As far as baby is concerned, it will be ok to have broken the waters (at term), it will not damage baby, and as others have said, baby will keep on making more, its mostly babys wee after all
About half the women who break their waters will labour within 24 hours, and due to the increasing risk of infection, its recommended to be induced by 96 hours, but all hospitals have their own guidelines on this. Our hospital has stopped giving routine IV antibiotics for prolonged SRM now, unless there is a ^Temp or GBS.
Think positive thoughts about this birth and you will find that it will probably be much better than last time
Good luck.