If I bought a single day ticket would I be able to experience the roller coaster??

Yes, the rides are included with your ticket

I did the ride at the Antarctica there I paid a little extra just to jump the line

All rides are included in the price of admission. There is a new water ride as well, you'll want to ride.

There's quite a few good rollercoasters there, all covered in your admission price.

Yes, roller coasters are included in admission. Wait times vary however for each ride and are posted near the rides entrances