On Friday, everything remained open till 9 with the exception of Thirteen, Smiler and Wickerman as they all had queues. Them 3 rides showed as 'queue at capacity' on the app.
On Sunday all rides on the app / queue line entrances showed as closed from around half 8, however they were still letting us get in queue lines right up until 9. I assume the rides with queues however did close the queues early again.