Take the shuttle into Cabarete as often as possible. Your hotel is NOT walking distance.
Friends are easy to make down there. Pick a sport and you'll soon be plugged into the nightlife. There is some excellent surfing with none of the attitude (so long as you demonstrate basic surfer courtesy), a huge kiting and windsurfing community, a martial arts club (BJJ and Vale Tudo), several gyms, as well as various tours. Be nice to people, ask lots of questions, buy the first drink and stay away from the whore bars and you will have no problem meeting some great people.
There is also a poker game, but we're a bunch of miserable jerks who don;t party much, so maybe give that a pass...
Have fun and good luck.
PM me if you need a lift in to Cabarete one night -- I can get a pass from the wife if I make it look like I'm doing someone a favour by taking them to town...