I've been doing a crazy amount of prep for my pathfinder 2e game. I've made a pretty big and deliberate deviation from the published adventure, and as they say: "well well well, if it isn't the consequences of my own actions!"

Basically the adventure takes place in one small town, but the adventure is largely "about" the neighbouring city. So I decided to help the players get more invested in that city I would move one of the important plot coupons to that city so that they need to go there and get it. Great idea, except now I'm having to prep a whole bunch of extra content and worldbuild an entire city.

Edit: I also had this idea to incorporate a rival adventuring party who will show up soon and so I've been having to create a whole squad of 3-dimensional NPCs.