I have been looking at old threads here and it's been really helpful, but still have a couple of questions. Firstly, am I meant to put newspaper down under the cat litter or just sprinkle the cat litter straight into the litter tray? Am not sure what newspaper will achieve, but have this odd feeling I should! 
The other thing I'm troubled about is that we are bringing the kitten back in the car with us and it will be a four-hour journey. I have borrowed a cat carrier and bought some Feliway to spray in it. Am just looking out old fleeces and towels to make it snuggly. What I'm worried about is what to do about food, water and the kitten's need to wee/poo. It is toilet trained already (it's 14 weeks' old), but will it just do that in the carrier if it needs to? Could I bring the litter tray and offer that or is that a mad idea? I do have an absorbant disposable mat to place under the towels in case of sickness or anything else.
And I don't know what to do about food because some advice says don't feed your cat before a journey in case it makes it travel sick. But surely it's cruel not to offer the kitten some food on the journey? I will obviously be offering water anyway.
Also, a friend told me to bring ear plugs for the journey because the cat might be noisy. It's a Balinese (like a Siamese). I have visions of a four-hour journey from hell, with yowling travel-sick kitten and two wailing, travel-sick children.