In the morning, take a flight from Mumbai to Guwahati. In the afternoon, visit the Kamakhya Temple, a Hindu temple dedicated to the goddess Kamakhya. In the evening, take a stroll along the Brahmaputra River and enjoy the sunset.
In the morning, visit the Assam State Museum to learn about the history and culture of Assam. In the afternoon, head to Shillong and visit the Umiam Lake, a beautiful man-made lake surrounded by hills. In the evening, explore the local markets and try some traditional Khasi food.
In the morning, visit the Elephant Falls, a three-tier waterfall located on the outskirts of Shillong. In the afternoon, head to Gangtok and visit the Namgyal Institute of Tibetology to learn about Tibetan culture and history. In the evening, take a stroll along the MG Marg and enjoy the lively atmosphere.
In the morning, visit the Tsomgo Lake, a glacial lake located at an altitude of 3,753 meters. In the afternoon, visit the Baba Mandir, a shrine dedicated to an Indian soldier who died in the 1962 Indo-China war. In the evening, return to Gangtok and explore the local markets.
If you have more time, consider visiting the Kaziranga National Park in Assam or the Cherrapunji Waterfalls in Meghalaya. You can also take a side trip to Darjeeling from Gangtok. To maximize your fun, try the local cuisine and interact with the locals to learn about their culture and traditions. Don't forget to buy some souvenirs from the local markets. Finally, make sure to check the weather conditions before you travel and pack accordingly.