most kids are apprehensive of the rays at first. they move quickly, and it startles the kids. if she holds the shrimp or sardines between two fingers and puts her hand on the bottom of the tank, it'll float. the rays will move in and pretty much suck it out of her fingers. you can put your hand over hers so she can get the feel for it at first.
Don't forget feeding the sea lions and seals. I find them the most fun. The dolphins tend to stay back because most guest touch the top of their heads, even when told not to. The sea lions and seals out on acts for the fish.
ETA: The dolphins and stingrays have windows for feeding but the sea lions and seals are fed all day long.
That's an awesome picture!!! Thanks so much to all those who shared their pics - it's great to see this before we get there.... in a little more than 21 sleeps