Me and 3 of my friends are going to DR in early December. We are in our late 20's and we are looking for a real exciting nightlife, but at the same time we want some nice beaches. We were thinking of spending 4 or 5 days in Santo Domingo and then 4 or 5 days at a beach resort area. I am trying to think of the best beach town to go to. Which is the most exciting at night? What resort would you suggest where its close to everything?