From Sosua, Cabarete is about 10-15 minutes east. Sabaneta's about 10-15 minutes past Cabarete, heading toward Rio San Juan. Not a huge town by any means, more country than town. After crossing the river (Rio Yasica, I think) coming into town and passing the two blocks of stores, not much else to see.
I dated a chica out there for a spell. Pretty humble and friendly people. I met quite a few, and did the "colmado" thing at night. Oh yeah, there's Mesopotamia disco in town. Be sure to check on which is the adult night before going. Might find yourself in the middle of a high school party.
Really not much else to do. A lot of farmimg done out there...Pretty calm and relaxing. Would be even nicer if not for the music blasting from the little colmados 24 hrs.
Whatever you do, bring plenty of long-sleeved shirts and pants. Trust me on that bit of advice.
Hope that helps a little.