Morning: Head to the Government Botanical Garden which is spread over 55 acres. It has over 650 species of plants and trees, including rare species of trees. The garden is divided into several sections, including a fern house, an orchidarium, a glasshouse and a bonsai section.
Afternoon: Visit the Ooty Lake which is surrounded by eucalyptus trees and is a popular spot for boating. You can opt for a paddle boat or a motorboat and enjoy the scenic beauty around you.
Evening: End your day with a visit to the Doddabetta Peak which is the highest peak in the Nilgiri mountain range. It offers a panoramic view of the surrounding valleys and hills.
Morning: Spend your morning at the Black Thunder water theme park which has over 40 rides and attractions. The park has something for everyone, from thrilling water rides to kid-friendly attractions.
Afternoon: Have lunch at the park's food court which serves a variety of cuisines. You can also enjoy some snacks and ice cream at the various stalls throughout the park.
Evening: Cool off at the Wave Pool or relax at the Lazy River before heading back to your hotel.
If you have time, consider visiting the St. Stephen's Church in Ooty which is a beautiful 19th-century structure. You can also take a ride on the Nilgiri Mountain Railway which is a UNESCO World Heritage Site and offers scenic views of the surrounding hills.
If you want to take a side trip, consider visiting the Mudumalai National Park which is home to a variety of wildlife including tigers, elephants and leopards.
To maximize your fun, consider renting a car so that you can explore the surrounding areas at your own pace.