The stadium is HUGE! You will get seats unless the park is beyond crowded that day!
I have personal info to the contrary.
We were just there
this week.
Busy day, but not super-busy.
Fantasmic! theater filled to "standing room, no more-guests-can-enter, packed" status 15-20 min. before 7PM showtime.
It was so completely full ahead of time that they went ahead and started the show 10 minutes EARLY.
This is not the first time this has happened to us, and we travel during what have traditionally been called the
"slow seasons."
If seeing a particular show is IMPORTANT to you.
Go early.
It is much better to take a chance and arrive far too early, than to arrive one minute too late.
(Like many of those unlucky guests who showed up at 20-some minutes before show time on the night we were there this week.)
If something is just of passing interest, you can take a chance and arrive much later.
You might be lucky. Many guests are.
BTW, we arrived an hour before show time (as is our regular practice) and watched as the theater got fuller and fuller.
We were down front, and yes, we DID get sprayed by the water screens a lot that night.
But, it felt good during the very warm night that evening.