You see many that speak of how to successfully navigate tourist attractions such as Disneyworld. I don't see many that talk about properly navigating Carowinds, especially with a season pass.
First, I would highly recommend getting a season pass, with at least the drink and meal plans add-ons. The park is now open 10 months out of the year so you have plenty of opportunity to use your pass. General admission ranges from $30-$60 and parking is $20/vehicle. A season pass without add-ons is $105. Therefore, you get a definite return on your investment.
I would advise riding the rides during the springtime and evenings as it can be cumbersome and uncomfortable to do so during the summer. Also, try to go on weekdays or evenings only. It is extremely crowded on weekends there.
You also want to spend as little inside the park as possible. Have an extra person to hold your belongings when you ride rides and even when you go to the waterpark so you don't even have to rent a locker. If you don't want a meal plan, no problem. There are restaurants nearby and you can pack a picnic lunch and eat it outside of the park.
Also, have the app download to your smartphone and know all of the dates from season pass preview night to New Year's Eve. Plan accordingly, the more the merrier, and have fun.
Lastly, keep a physical copy of your pass and your phone on you, and pack a bag in the warmer weather if you want to attend the waterpark and the general park. Both have different entrances/exits and closing times.
Failing to plan is planning to fail. Do so and as you may hear over their loudspeaker "enjoy your day at Carowinds!"