Good luck Rachel and Lozzer!
Deffo drink loads of water - you might find it hard at first although CD makes you thirsty, I drink at least 4l a day now.
Another bit of advice, daft as it sounds, is don't eat! Not even a morsel, I know if I had a mouthful of something it would be the start of a slippery slope, and it's just not worth it!
Let us know how you get on x
Corinne x