If you have more time, you can add a visit to Yercaud, another popular hill station, known for its scenic beauty and coffee plantations. You can also explore the Fort St. David and the Dutch Fort in the city of Cuddalore.
If you have less time, you can skip the ATV Adventure and the Koli Hill Trekking and instead explore the safari ride at Melagiri Hills or take a swim at the Gingee Lake.