The only discos within the vicinity are:
1) The one in the hotel (I forget the name)
2) The Hurricane Disco in the hotel next door (Hacienda)
Other than that, find some other people your age who are staying at the resort, hire a cab to take you to Crazy Moon or Hemingways (both located in the Playa Dorada complex). Cabbies will know the way.
Maryanne