The best way to start your trip is with a nice early morning walk at Coaker's Walk. It's a narrow path on the edge of a cliff with stunning views of the valley. After the walk, head to Bryant Park, a beautiful botanical garden with a wide variety of flora species. You can picnic here, rent a boat, or just take a leisurely stroll.
If you're a daredevil and enjoy a good adrenaline rush, Dolphin's Nose viewpoint is a must-visit. The trek is challenging but will reward you with a stunning view of the valley and mountains. After the trek, head to Guna Caves, a hidden gem in Kodaikanal. These mystical caves are not well-known to tourists and are perfect for adventure enthusiasts. It's a beautiful yet unexplored location.
If you have more time, you could consider adding a visit to the Kodaikanal Lake. It's a beautiful location where you can go boating and relax. You can also visit the Berijam Lake, but it requires prior permission from the forest department. If you have less time, you can skip Guna Caves, and opt for a visit to the Pine Forest instead. Also, keep in mind that most tourist places close by 5 pm.