I have a 20 month old... I don't want to take her to the 4D movie. Is there a way purchase food for the stingrays without buying the tickets that includes the 4D movie?

Yea adding the 4D movie is a package. You can always do all the other stuff separate

Yes you can pay to feed the sting rays at the station itself in case kiddo is scared you don't have to worry about wasting your money.

Yes

I am pretty sure they can be separate

I believe they're separate