An Alternative is to travel on the Kaghan Valley which happens to be a six -hour generate from Islamabad and can be achieved in a very weekend (e.g. leaving Friday lunchtime and overnighting in Abbottabad) - but greater to prepare three or even more evenings if you can. Beware of https://maps.app.goo.gl/3pgqKTY4pBUEm3Dz7