Maybe I’m crazy, but I would swear that in 2019, the event still started at 7, and has for years, but early entry was earlier than ever at at like 5:15. The official “opening” can’t start at 6 (even though early entry people are busy doing mazes by that point) because that’s when the day park itself would close, and then there’s the hour of getting the daygoers out before doing the scaremony at sundown.
Edit: Some quick Googling backed me up, so I’m not crazy. Here’s a
source or
two that corroborates the 5:15 early entry in ‘19 while retaining the 7 opening time.