I just created a forum for discussing everything except making deals:
https://pinside.com/pinball/forum/topic/2022-york-white-rose-game-show-hotel-food-etc-no-buy-or-sell#post-6923826
I just added the show on the event page. You can add that you're planning on attending.
https://pinside.com/pinball/events/2022-york-white-rose-game-show-2022