The morning will have light crowds, lines are short.
If you get there at 9am when they open, it takes about 4 hours to take a lap. If you go real slow and look at the details, then it can take a couple hours longer.
In the afternoon, the park will be gearing up for HHN, depending on where it will be held next year.
At night the place will be jammed as the locals come out for HHN.