You need to bring photo copies along you can leave with them!
I wasn't sure I need to, but I made 2 sets of photo copies (one set turned out to be sufficient) to hand out and went out to the Asociaci?n Norte?a de Ahorros on Beller in Puerto Plata. There was a good dozen of applicants in front of me, and had it not been for 2 who would not understand that they needed to have they paper work in good standing it would have taken less than the half hour I waited in line.
I do not yet have a c?dula, so I brought my passport in original and copies along. Service took less than 5 minutes and I walked away with my sticker, the sweet memory of a smile from the senorita at the window and 22 hundred pesos lighter.
It's a "you can do it"-deal.
... J-D.