If its a "guys' trip," I would look into getting a few villas, which may prove cheaper than hotels. Check with residencial hispaniola and residencial casa linda, in addition to VRBO.
Zoom is correct, you should really view POP, Sosua and Cabarete as a single destination, stretched out over 40 or so miles. Puerto Plata has the most infrastructure, Sosua has the best "girlie bars," and Cabarete and Sosua both have great daytime activities available at the beaches. I'd say Cabarete has more restaurants, but each town has no shortage of decent spots.
My advice is to NOT try to be a tour guide for 15 guys. It's far worse than herding ornery cats. Make sure there's a car for every 3-4 guys if you do villas, or stay in a Sosua hotel so you won't need transportation, and just let everyone do their own thing.
In a group that big, you'll have at least one person who:
Will attract drama no matter what;
Will drag around making whoever is with him late;
Will skimp on the tab;
Will be super particular when ordering anything;
Will ask you to translate (because he didn't bother picking up "Spanish for Dummies" when it could have been helpful);
Will have problems with his accommodations;
Will think that by saying something LOUDER and s-l-o-w-e-r that a person who doesn't understand English will somehow suddenly "get it;"
Will think they can shortchange a chica, and be surprised when their iPod goes missing;
Will go on lecturing Dominicans (in English) about the "right" way to do something;
Will think it's funny trying to "make it rain" in the club;
Will NOT think it's funny that they didn't bring any clothes for rainy weather;
Will wonder why they budgeted $150 in "fun" money, and are broke by the second day;
Will think their stomach is somehow immune to the bad tap water;
Will enjoy haggling with a farmer who wants to sell a whole melon for a dollar, but that's somehow not cheap enough; and
Will knock on your door at 4 a.m. because their chica "suddenly" wants to go home, and somehow that's your problem.
I know, your instinct is to think, "naw, my boys are cool," but you've probably never traveled with all of them at one time to a place like this. Just remember, while you're a cool guy and a friend to them, you're not a chaperone. This is your vacation, too.
