City Builder

My son has been creating new worlds with weird food types of names, (such as Lemon Drops, or Orange Creampie) he says his favorite right now is Cranberry Puffcakes, and he makes the seed the same as the name of the world so... Cranberry Puffcakes. I asked him what he liked about it and he started it up and right nearby was a food vendor, and over to one side where he's trying to build a small dirt hut is a dual waterfall coming off a cliff, and he tells me there was plenty of flint but not a lot of trees too close by so he's been replanting trees that he gets seeds for (good boy). I haven't a clue how the game works so not sure if another person using the same seed would spawn in the same first spawn point or not, so while he likes this seed, not sure if it would be the same for others.

When I created a world for my son, I chose something about how sand and gravel can fall to something like sand and gravel and dirt can fall if not laterally supported. This is too difficult of a setting for my kid and he's getting frustrated with it but would rather not start a new world as he's finally figured out how to make torches. Is there a way to reset that setting in the individual world, or edit the world save files to reset that setting?

This is probably really simple but my young son is struggling with this and I can't see the answer other than in a way that seems wrong. He presses his E key to bring up the crafting window and then wants to move an item from his hotbar to the crafting box but his cursor is locked to the game screen so it just moves his view. The only way that I could figure to do it was to open the H window then press the E key and his cursor is unlocked from the game world to allow movement of objects from hotbar to crafting box. There must be a more elegant solution to this that we're just not seeing. Thanks