great report and photos.. you sure did pack it all in to a couple of days! Pedernales is one of my very favorite places and I would really recommend it to anyone. I, too,would love to camp up in the cloud forest but do not know if this is possible. Can I ask how the road was into Hoyas de Pelempito? Last time I was there it was really washed out - passable really only with a concho or a very strong SUV.
Also.. for the next time, I would really recommend that you include a Friday or Monday to stay for the Haitian market and cross over into Anse a Pitres - the border is open on those days. You can just walk down the main street to the beach and sit under the trees and have a soda.
Not that there is much to see in Anse a Pitres but it is a sweet little town- they just got electricity on the main street and a couple of the churches about two years ago.
Intrepid travellers can take the open ferry boat from there which goes overnight to Jacmel.....