Is there water pools and slides

Yes, at Cedar Shores, the waterpark

Yes, but the admission to the water park is separate from the admission to the amusement park. You can buy an admission ticket that would get you into both parks.

Yes

There is a waterpark called Cedar Point Shores.

Yep! You have to pay for a pass for Cedar Shores but its worth it

Yep there is a whole waterpark

At the water park

Yes it only costs an extra 1000 bucks a person