An Alternative is usually to travel into the Kaghan Valley which happens to be a 6 -hour travel from Islamabad and can be carried out in a very weekend (e.g. leaving Friday lunchtime and overnighting in Abbottabad) - but better to approach 3 or even more nights If you're able https://maps.app.goo.gl/3pgqKTY4pBUEm3Dz7