For just one day, lots of venues will all join together to do lots of things, meaning that even with the fastest feet and most fortunate timing, you’re bound to miss out on most them.
Sorry for the whinge, and while I appreciate having a “festival” does make managing a joint marketing campaign somewhat easier and gets more publicity, it does also mean that it’s nigh on impossible for people to see and do the majority of what is put on.
As it happens, most of the venues aren’t really doing anything particularly special, being mostly limited to putting out an object that isn’t often seen, or providing some family friendly entertainments.
It is however a chance to see those rarely seen documents and books, so with some decent planning you should be able to fit in a rush around venues to see them.
The full list of venues and events is on the Historic England website.