In the morning, explore the beauty of the Sanjay Gandhi National Park, which is known for its lush green forests, diverse flora and fauna, and trekking trails. You can opt for a guided trek to Kanheri Caves, a network of more than 100 rock-cut caves dating back to the 1st century BCE. In the afternoon, visit EsselWorld, one of India's largest amusement parks. It offers various adventure rides, including roller coasters, water slides, and a virtual reality coaster. In the evening, head to Juhu Beach to enjoy the sunset and indulge in street food, such as pav bhaji and sev puri.
In the morning, drive to Della Adventure Park, which is India's largest extreme adventure park. It offers various adrenaline-pumping activities, including bungee jumping, zorbing, rock climbing, rappelling, and paintball. In the afternoon, visit Gateway of India, which is an iconic monument in Mumbai. You can take a boat ride to the Elephanta Caves, a UNESCO World Heritage Site, which is known for its rock-cut temples and sculptures. In the evening, explore the vibrant nightlife of Mumbai at Colaba Causeway, which is a popular street market that offers shopping, eating, and entertainment.
You can also consider visiting the Haji Ali Dargah, which is a famous mosque located in the middle of the Arabian Sea. You can also plan a side trip to Lonavala, which is a hill station near Mumbai that offers scenic views and waterfalls. To maximize your fun, you can rent a bike and explore the city on your own. Make sure to try out some of the local delicacies, such as vada pav, misal pav, and bhakri.