I'm on day 3 and so far so good. I have to admit I still get on the scales daily, but they haven't moved either way at the moment, so I'm feeling quite positive. Even if they do go up, as long as I've stuck to the diet, I know it'll come off somewhere at somepoint.
I had pasta on night 1 and it felt like a lead balloon in my stomach as I hadn't eaten it since Feb, but it did taste yum though.