Thanks Mrudul, Sabyasachi and Prashant for your comments.

Mrudul- Corbett is a place I can actually settle down after retirement, I am so much in love with it. I haven't come across a jungle which gives the variety of landscape and vegetation that Corbett gives in India. You can get the feeling of the savannah and bush at the same time in Corbett and also in some places get the feeling of a rainforest as well (in season). For Dhikala you need to book 45 days in advance and sad to say when I tried the last time to book at Dhikala online in April this year, I tried for 4 days continuously and every time the room availability would show as full within few minutes. Looks like there is a nexus between the Dept and local guides/tour operators. Nevertheless, this is one jungle I can never get enough of. Good luck on your trip planning and hope that you make the trip to Corbett soon and share your experience with us.