1. put your bottles in a separate bag/box and put next to the bin once a week/month. there are bottle collectors checking trash bins in most areas. they live off that.
2. there are 2 botelleros in sosua abajo. they buy bottles from individual collectors and then sell them either to the producer (presidente, brugal) or to other users. i will not bother you with the location of the guy who is further inside the barrio but the second botellero owns colmado/almacen on the maid road, almost exactly at the street lights of sosua abajo. green building, on the left hand side (coming from cabarete). guy's name is wilson.