This is great! Welcome to the thread lissistar- great to have another GAPSter It's awesome you have a friend IRL to go over the diet with you Keike. The Real Food 101 posts on this blog are great... here's the one for water kefir Real Food 101: How to Make Water Kefir

So exciting you're going to start too doubletrouble!! I think you and Keike will both find there is HEAPS you can do towards being on GAPS and off less healthy options that really aren't that hard. The things you listed are great DT- just changing fats, adding probiotics, cultured and fermented foods, adding broth... these are all great things for your health.

I only ever gave my eldest son natural yoghurt that was pretty sour and he always loved it. He developed an intolerance to dairy which we're still working on so he's not eating yoghurt now. And my youngest isn't really eating dairy yet. If your children are used to sweetened yoghurt then perhaps start with smoothies. I wizzed some of our yoghurt up with a banana and it was TOO sweet!! My H and I also much prefer sour cream as it's not as yoghurty tasting.

Yes, seaweed is fine

The carbs thing is one of the biggest shifts going onto the diet. It's not "no carb" as vegetables and fruit have carbs. So pile up your dinner with more veggies. My eldest has GAPS style anorexia as he has so much anxiety about food so he doesn't eat regular meals anyway. He just eats soup. All day. And 1/4 to 1/2 an apple per day. My youngest has never had grains in his life. He eats an egg & pork sausage pattie for breakfast, some soup for lunch and our dinner (so maybe meatballs or salmon with veggies for example). Snacks are generally boiled veggies or left over meats such as chicken or meatballs.