Do you have to pay for the rollercoasters and rides? Or it comes included with the admission ticket?

It covers the park ride, there are some attractions that you would have to pay but other than that majority of the ride are covered under the ticket

Rollercoasters are included. There are some attractions that cost extra.

there are a couple of rides that are extra like the go karts but must are included in the ticket.

The admission ticket covers main rides/rollercoasters. Carnival games, food, and some specialty attractions cost extra.