Walking around the town of Al Hajjarayn, which is very high, gives you some good views of the Wadi from the walls of the town.
Hadramaut is famous for its honey. We saw bee hives along the road from Tarim to Shibam and you can buy the honey in many places in the Hadramaut - along the roadside, in the shops in Shibam and Tarim and Seiyun. One of the best places to buy it is in Al Hajjarain, the price is reasonable (can't remember how much) because there are less tourists than other places and the quality is very good. It is packed well so travels fine, but some countries do not allow importation of food so check your government customs rules.