I'm quite anal tidy when camping so I can give you my tips on how I keep the tent organised.
-Each person has a plastic box with a lid and all their belongings live in that box; clothes, books, colouring pencils etc. You can stack them, even stick labels on them so it's easy for people to find their box. And then you don't have loads of mess hanging around the tent.
-If you have any poles you can hang things on, get some S hooks and use these for hanging up coats, cardigans, bags etc.
-I have a 'no shoes in the tent' policy and have a blue Ikea bag outside the door where people can just throw their shoes in before they walk in the tent.
-I have a distinct cooking area with the camping stove on a table. Under/ next to the table I have two plastic boxes with lids, one with food in and the other with cooking utensils/ pans etc. DC know not to come near when cooking is going on. I have a pole in the porch so I hang my pans on S hooks. When it's windy it sounds like a Romany caravan! 
-I plan the meals and only take what I need. eg I won't take a whole bag of pasta, I'll measure out what I'll be cooking and decant that into a freezer bag. That way as the week goes on, you'll find you have less stuff.
-I freeze everything that's freezable (including milk) and plan my meals around what is likely to have defrosted the earliest. It also helps to have 2 cool boxes, one that you'll be going in regularly for milk etc and another that you only open once a day to get out that day's dinner. The 2nd one stays cooler that way, especially if everything starts off frozen in it. Cold air sinks so whatever's at the bottom will stay frozen the longest and the top will defrost first.
-We also bring our duvets and pillows, but I've found if you put the duvets in the boot first and pack everything on top, it flattens them down so they don't take up much room.
-We have a lot of plastic boxes but find that they stack really well in the boot.
Hope some of that is useful!