It depends on what type of climate you'll prefer and what scenic beauty is in your mind.. If you are looking for cold and snow, then I have to say himachal, sikkim or gangtok will be the best option.
If you have love for history then opt for humpi or other outer bangalore spots or evel vishakapatnam.. These places are safe and best for solo travelling. Thank you
As you are going in December which is best time to.visit there so enjoy the New year celebration at Baga Beach and Calangute beach . Also go to Tito's Lane for night parties , you can visit Chapora fort near Vagator beach, Aquada Fort, Candolim beach also.
North Goa, no doubt about it.. dec is the Christmas🎄🎅🔔❄ time. you will have fun and frolic parties, enjoy beach, awesome weather and delicious sea food. if u r a party animal, if u want peaceful time, south goa is always very calm and peaceful.
Kullu manali and rohtang pass is better option as even in june and july u can feel mount breeze and can see snow cover mountains...
and for solo trip there is no need to worry as the people of HP are very educated and calm in nature.
It's totally ur call and if you want some clear picture or wide angle picture and 4k video than u can go for go pro and now go pro hero 7black is in trending ... but if you want click some landscape and portrait than go for DSLR camera.
I would suggest you Goa...I know people will say that you should go with friends but trust me it's my personal experience. July is off season for Goa like place and since the rain has just started you will love how beautiful Goa becomes during this season. Enjoy ur solo ride through narrow roads surroundings lush green fields and palm trees. You will surely live it.
Now there are various aspects to this question. 1) there is a offer where in you can use 400 points and book a package on twin basis and the entire points are taken from the kitty and you get the package. 2) now on the other hand how to use limited points on an existing package I don't have much information about it.