Well aditi, i think. if possible make a little delay in your schedule. postponing it will offer you many wonderful sceneries and a soothing atmosphere to roam around.
u may visit munnar and Thekkady though... still i feel end of mansoon is the best time to b in kerala...
At present you can go leh ladakh. It would be an extraordinary experience.
I would suggest you to rent bikes form karol bagh in delhi. There are huge numbers of shops at naiwala, karol bagh. And they will give you complete guidance on route.
If any group is available then you may join them too.
I guess 7 days are enough for complete trip.
5-10 days for visa processing and packages i think are available i ranges of 30-45k. google for packages. or you can just plan slef by using skyscanner for cheaper flights. airbnb, couch surfing and trivago for cheap stays etc.
Better go by yourself!! most tour operators will definitely charge a premium of atleast 10% to 15% above the actual cost and hence to cut cost plan a trip yourself. More over tour packages have restrictions regarding timing as well as places if it is a group tour. If you are travelling solo or with a group of friends stay at hostel, use public transport and like wise you can meet new faces and also can explore the place in a better way and also save a lot of money which you can otherwise use for trying different cusines or shopping.
From nainital you can take a bus to kathgodam and then take a bus or train to haridwar then you can take a bus from haridwar to joshimath or haridwar to rishikesh and then joshimath then from joshimath you can travel in local transport to auli
Hey Anmol, Here are few hotels or stay options in one night for you :- 1. Madri Haveli https://www.madrihaveli.com 02942413377 2. Banjara hostel https://www.hostelworld.com/hosteldetails.php/Banjara-Hostel/Udaipur/271212 3. Moustache hostel 4. Haveli studio Apartment ... These are few better ones in budget also ... And coming to what all to see in udaipur :- Jagmandir island :- this is yeh island you are talking about ... Vintage car museum Kumbhalgarh fort Saheliyon ki bari Sunset in Sajjangarh Visit lake palace also ... Eateries around to check for :- Happy Travelling Bro!!! Lalbagh , Ambrai, Santosh Dal Bhati.
, Natraj Thali ... Happy Travelling Bro!!!
A notepad with to-do plan lkst for the place you are going to visit. (though i know mobile phones have been dominate, but still if anythings with phone). A first aid box with some medicines used commonly.