I really liked getting to try this out, and it very much helped me with planning and then running (into the first couple sessions so far) of a campaign for tweens. From the GM side, I was tracking a lot of world lore, factions, and NPCs with this along with how many days passed, but I did also run a test with a mock character to see how that filled in too.
It would be nice to see some additional prompts on the NPC page for profession, faction, and maybe appearance.
For the rests and tasks page, I used this for tracking in-game days and what happened each day - for form fillable, it would be nice to have a full and short rest moon for each line so it's easier to remember what we're at for that in-game day.
Overall, this was a big help, and I like being able to go back into my notes to change them as the party interacts with the world and makes choices while keeping things more easily grouped (previously, I was longing chronologically in real-world time, and that was messy to look up). Great tool!