If I already have a parking pass for the daytime carowinds and have scareowinds tickets too so I have to buy another parkingpass

It is a free parking pass for the park that it covers it all

Everything is covered

Carowinds daytime and scarowinds are to separate events. If you leave the parking lot you will need a new parking pass if you stay in the parking lot between the events you can use the same one.

It is a free parking pass for the park , covers it all

I'm pretty sure as long as they are both for the same day then the parking pass will be for all day also.