I know the website/app is not user friendly but check on the day of your trip for what's open and close
For attractions https://seaworld.com/orlando/rides/
For shows https://seaworld.com/orlando/park-info/theme-park-hours/
It is common practice to have several attractions closed on weekdays and certain sections of the park opening and closing a different hours. Basically the have noticed people go clockwise which is why the left section of the park closes earlier.
If youre gonna shut half the park, charge half the price. Its understood that some things lime pedal boats and Atlantis was closed due to season but what we experienced was a park that shouldnt be open.
My family were both first and last timers this trip. Unfortunate as seaworld used to offer a quality product.