Yes, lines will be shorter on opening day.
They always are. Most of the rides are all walk-ons.
I also predict that the weather will be sunny and 75.
Don't worry about parking either, since the attendence is down, there will not be any hold-ups at the parking booths.
Same goes for season pass processing. The first day is never busy, so don't expect a wait for processing.
You're usually not one for sarcasm, that's Uncle Henery. . .