u/Key_Squirrel_4201

Hello, I am planning to travel solo for the first time ever, so I apologize if this post is filled with stupid questions.

I will list my questions here:

1.) Does the NATCO bus route only go from Karachi to Islamabad?

2.) From there, do I have to take a bus to gilgit? And from Gilgit, a bus to Hunza?

3.) Is Hunza walkable? I've heard people say that you don't really need transportation. I intend to go on treks, hikes, explore the mountains, and see the old forts and villages.

4.) I want to go somewhere between Sept-Dec. I know that's a huge range, but I think Dec is a bad time to go as much of Hunza will be closed because of snows. Are Sept/Oct/Nov generally okay for going? My main concern is being able to access mountains, hikes, and treks.