No you can go directly and explore. local people and other tourists or shop owners will help you out if you need any information or help. no need to get a guide for Parvati valley. do visit kheerganga
You can book a Volvo if you want a budgeted trip and traveling alone, If you are a bunch of people or have no budget constraints then book a cab or private car
As u mentioned u r solo then manage urself....nd explore india.... it will help you in your budget n ur itinerary....when you booked ur journey then definitely you never feel joyble for urself
Govt. Approved Pench Safari Booking. Safari Timing duration is 3 hours approximate. Pench Safari is closed from 1st July to 30th September every year. Maximum 6 Adults & 2 Children are allowed in one jeep. Package includes Govt. Permit, Jeep & driver & guide charges. Package start from INR 6000 per jeep. Visit Website: http://www.penchnationalparkindia.in/
I just visited in june....nd visited leh Ladakh in September two years ago....as i though it will be great to visit spiti in September....scenic views are waiting for u