Puerto Plata is the best place to go if you like night life. Sosua is only 5 minutes from the airport. There are many discos there. For single men, it is easy to find a partner for the evening. Stay at an all inclusive resort if you like secluded beaches. I would also try the many excursions they offer. For history buffs, do not miss Santo Domingo. Go the the Colonial area. See the Columbus cross. Enjoy the many different regions in the country. You can even go whale watching in Samana.