Planning to travel to DR for the first time this summer. We are a family of 4, 2 boys ages 11 & 13. I am looking for a beautiful clean beach, clean modern accomodations, and fun activities for the boys to keep them from killing each other lol. I don't want to worry about food poisoning and I don't want a place packed with drunken party animals either. My budget is about $3500 total including air. Please recommend.