I hope you enjoy Punta Cana. It's nice for a 2-day relaxation as it gets boring very quickly. And very little culture and adventure. The Punta Cana Group (composed of Julio Iglesias & the estate of Oscar De La Renta along with 3 other wealthy men) ban jet skis and atvs. Punta is also flat, zero landscapes.
As a Dominican, I would have recommended Samana.
Samana has lush mountainous landscapes, ecological hotels such as the Dominican Treehouse Village, whale watching, horseback riding to a gorgeous waterfall, affordable boat rentals, zip-lining and you can rent an ATV for the day and ride the entire town. It's a hidden gem surprised the country doesn't advertise it more.
Punta Cana resort tips: Avoid the entire minibar. Avoid bread and salad, I've seen multiples guests touch the bread and put it back. Salad is probably washed with sink water that you're not used to. My son and I got the worst diarrhea and vomit of our lives last year. Go slow on the variety of liquor, let your body adjust for a day or 2. Enjoy.
Samana