Ullapool is lovely. Went camping there a couple of months ago and had a great time. Beautiful scenery, good pubs and a really good Indian restaurant as well. The road from ullapool to Achiltibuie is a good drive. Really dramatic mountain scenery and one of my favourite parts of the country. On that road there is a mountain called Stac Pollaidh which is fairly easy to climb and the views from the top were breathtaking. Great views of the surrounding mountains and out to sea towards Lewis. Lewis is worth a visit as well. Beautiful beaches, especially in Harris and one about 10 miles north of Stornoway called Tolsta, which on a good day has good views of the mainland. Some pubs in Stornoway are open on a sunday but they close fairly early and as Ross said pretty much everywhere is shut. The petrol station is open and thats about it.