I don't even have a trip planned in 2025... but I was just thinking it was something I would consider depending on group size/hotel size.
Taking it to the extreme. 4 adults staying onsite at $700 a night that fly in late on a Friday.
Option 1: $700 a night hotel (from like 9pm to 11am)+ $40 in breakfast + $272 for water park tickets= $1,012
Option 2: $120 a night hotel (with free breakfast)
~$900 in savings.
I realize there it's not quite apples to apples (having to jump hotel rooms after the water park day, nicer hotel to sleep in night of, ect.), but if I was planning to go to the waterpark on my first day it is something I would definitely consider.
I did a similar thing ~5 years ago with universal because I didn't want to pay for 1 evening at a deluxe hotel where I wasn't going to the parks.. I flew in on a Friday night, stayed at a cheap hotel for 1 night. The next morning I drove to Royal pacific, got my express passes and jumped into the park. I didn't get any "free" tickets, but I did save a few hundred dollars.