Have the earliest possible res for breakfast at Crystal Palace too
I've not heard of anything in particular happening - but as pp said its likely to be busy so we might not stick around too late that day (depending on whats going on)!
We arrive that day, I hadnt realised it was the anniversary when we booked or we might have tried for the week earlier! Do we know if anything is planned - I might be persuaded to be really silly and go straight to MK when we arrive rather than to our hotel.