Have you visited the slim and save site yet, all the info is there
, if you are having 3 packs (which I am ) you can have any variety of packs you choose i.e savoury or shakes but only 1 bar a day (a bar is obviously a pack), you then also have a protein meal and your 200g of Veg (large variety) I use some of my veg allowance to go with a meal for example Chilli and cauli rice , yum yum and then I always have chicken salad or stir fry as my protein meal (the salad/veg is what is remaining of my allowance).
It really is a great diet and I am pleased with my losses so far, def still losing as my clothes are feeling looser since my sat weigh in.
If you need the structure of a weigh in I would suggest weighing in at a friends or your Mums, someone else keeping an eye on you if you like. Good luck with whatever you decide, It sounds too good to be true but its not honest just take a look at some weekly losses and how many have already swapped and what they say about it
ETA I forgot the most important bit for me, I can use my milk allowance to have my cups of tea, what more can you ask for lol