One of the close walkable hotels is probably the best bet; I would be shocked if any of the free shuttles ran to a separately ticketed late night event.
I plan to Uber from our Universal hotel. I did that in 2021. The parking lot was backed up at the time we arrived & it took longer than anticipated, so I tipped extra to compensate the driver. There were plenty of other Ubers/ride shares incoming too, they had the driver put on the flashers so we'd be routed differently than people who were parking. No issues getting an Uber at the very end of the event either.