There’s also the “Watanagashi Festival in Gero Onsen and Shirakawa-go” event being held on the 18th and 19th, which I’m going to be attending.
We’re going to be sightseeing in Shirakawa-go (the village Hinamizawa was based on) and Gero Onsen (which has a number of buildings that were transferred from Shirakawa-go), and doing a real Watanagashi (presumably the cotton variety) on the 19th in Shirakawa-go.
Oh, and Ryukishi07 is going to be attending, too.
The tickets that provide lodging and transportation have all been taken already, but 70 new slots have just opened up for “day trip” packs, if anyone is interested: https://atnd.org/events/77719
I’m planning on hitting the 10th anniversary event for a hour or too as well on the 12th.