We were there Saturday morning & evening. Of course morning wasn't bad & we left around 11 or 12. Went back around 6 & Preferred Parking still had places to park. The park itself didnt seem too bad for 19,000+ people.
Well keep in mind, all 19,000 were not there at one time..
When I checked in at 6, 7,000 people had already left the park, so actually there were about at 8,000 on park at 6...
that being said,
with the reported last number, approx. 4,000 entered after 6..
so>
in theory about 12,000 people on park from 6- close.
Thats not allowing for anyone else leaving, and you know they did.
Sounds like a perfect day, with extended hours..
Hope you had a good visit, sure sounds ideal.