Reddit reviews Lonely Planet Pakistan & the Karakoram Highway (Country Travel Guide)

I think folks have done a decent job of answering your questions. I will add the following.
Pakistan is not very DIY, and so not easy for foreigners trying to do everything by themselves, but it can become quite easy if you have good local guides. For example, if you cant buy a pullup bar or weight vest, someone can custom make one for you quite easily, but a local person has to help you find the maker.

If you are interested in outdoor adventures like snowboarding and kayaking, there are a few things near Pindi/Isloo, but Pindi is also a great launching pad for things further up country. You will find some of the world's greatest out door adventures in Pakistan's northern areas. I suggest you start with Lonely Planet's guide to trekking the Karakorams. Lonely Planet's online resources can be helpful too.

BTW, what brings you to Pindi?