Prepare to be challenged!
The first two weeks of Bootcamp will challenge you - it's not called Bootcamp for nothing!
If you've never low carbed before, the two things that generally shock and worry people are not being able to eat fruit and having to eat large quantities of fat. This goes against everything we have been told for the last 30 years or so.
We don't eat fruit (not in the first two weeks anyway) because essentially fruit is sugar. There are obviously important nutrients in fruit, but you can get those from vegetables - and vegetables (generally) contain a lot less sugar. And on Bootcamp, we are trying not only to significantly reduce the amount of sugar we consume, we're also trying to break our desire for sweet things.
What you will find, I promise, is that once you're into the low carb swing of things, that your tastes do change. You'll start to taste the inherent sweetness of foods that at the moment you wouldn't describe as such. It's very common for people, after a while, to decide they're going to 'treat' themselves with some kind of sweet treat, only to find when they do, that it really doesn't taste like they remembered it, and that it's unbearably sweet.
One of the worrying things, IMVHO, about fruit, is how often it's used as a snack. For us as well as for our children. We do it because we believe it's healthy and better for us than a biscuit. But actually, all we're doing is dumping a load of sugar into our blood stream. Which is what eating a biscuit would do.
On a low carb diet it's important to eat lots of fat. The proportions of food we should be eating are switched round completely from the current (advised by the Government) carbohydrate:protein:fat, to fat:protein:carbohydrate. Fat is not bad for you (apart from transfats, which are horrible things), and the claimed link between saturated fat and coronary heart disease has not been proven.
here's a really interesting piece by Andreas Eenfeldt, MD showing that under test conditions, the low fat diet had to be discontinued on ethical grounds!
Fat is good for you - our brains are mainly fat, and it's good for your skin. It also, very importantly, doesn't provoke an insulin response - and it's the insulin release that ultimately is responsible for the body laying down fat. Carbs provoke a large amount of insulin to be released and protein causes a little bit - but fat doesn't produce any. So eating fat does not make you fat!