While in Jarabacoa, if time allows on the highway after the Virgin sanctuary on the S-Curve go up another mile and your left stop by Alpes Dominicanos and ask for Ingeniero Rodriguez, the Administrator and try one of the typical Dominican plates at the Restaurant by the swimming pool, take a dip in the water while they prepare it, and then have yourself Dominican Goat a la Criolla, or Rabbit. Try Rice and beans with tostones for your meat, look at the sites and nice villas at Alpes and then go on to rafting.
I would also recommend, if time permits to go to El Generalissimo or Camp David Ranch, only about 30 minutes away up in one to the most challenging inclined roads in the country, but very safe and beautiful indeed. The views from Camp David Ranch are fantastic. You can see the Momumento de Santiago as small as a your fingertip from 1200mts.