Traveling from Guwahati To Tawang is a long ride. You can do it in one go by direct bus/sumo or take break at Dirang/Bomdilla.
Looking for a weekend trip in nature near Mumbai, check out Waterfall Near Mumbai
Depending on your budget, you can plan Delhi Darshan either by private car or public transport.
Bhutan is a beautiful country with nature at its best but Bhutan Tourism is bit tricky. This post helps you plan for your Bhutan Trip.
Nandi Hills Online booking was announced by the government but nothing is in place to implement it. Better reach early and wait in queue or visit late and wait in queue for the parking.