Can't imagine it helps that those walkers seem to keep taking out the generator for the Safe Zone...
The park actually gave me a similar reason as to why I was getting random emails and text messages about someone else's booking a few months back!
Staggered openings appear to have arrived at Thorpe Park. From what I've heard in the park previously, they often don't have enough staff to get everything running on-time the day after a late night opening. I noticed yesterday a lot of the coasters were listed as open from 11am, but then opened on time. Today it appears Inferno and Colossus remained closed until 11am. Previously they've opened everything with a single train, then gone back to add the second ones.
My guess is that they list most of the coasters as open from 11am on the morning after late nights, to give the tech staff they have on duty some breathing room to get everything open. Bit of a shame though, especially as Sunday's have shorter hours but the same entry fee as the late night openings.